{"title":"4-1\/2\" Flap Discs for Angle Grinders","description":"\u003cp\u003e4-1\/2 inch flap discs, also called 4.5 inch flap discs or 4.5 flap wheels, run on angle grinders. This collection gathers the 4-1\/2 x 7\/8 inch flap discs we stock, from 40 grit for fast stock removal to 60 and 80 grit for weld blending and 120 grit for finishing, for fabricators, welders and woodworkers.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4-1\/2 inch (115 mm) discs with a 7\/8 inch (22 mm) arbor hole for angle grinders.\u003c\/li\u003e\n\u003cli\u003eZirconia alumina, calcined alumina, ceramic and silicon carbide grain, plus packs that mix zirconia and aluminum oxide.\u003c\/li\u003e\n\u003cli\u003e36, 40, 60, 80 and 120 grit, in single-grit packs or assorted packs such as 40\/60\/80 and 40\/60\/80\/120.\u003c\/li\u003e\n\u003cli\u003eType 29 conical discs, including a half-curved edge ceramic disc, plus Type 27 jumbo discs in 36 grit and a flexible cushion bowl disc for contour work.\u003c\/li\u003e\n\u003cli\u003eStandard density and high density discs, most on a fibreglass backing, in packs of 3 to 50.\u003c\/li\u003e\n\u003cli\u003eSilicon carbide discs, including 120 grit, for stone, marble, granite, glass and non-ferrous metals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWill a 4-1\/2 inch flap disc fit my angle grinder?\u003c\/h3\u003e\u003cp\u003eYes, if your grinder takes 4-1\/2 inch discs. The discs here have a 7\/8 inch (22 mm) arbor hole that mounts on the grinder's flange and locking nut. Check that the maximum RPM marked on the disc is equal to or higher than your grinder's rated speed, and never run a disc faster than its marking.\u003c\/p\u003e\u003ch3\u003eIs a 4.5 flap wheel the same as a 4-1\/2 inch flap disc?\u003c\/h3\u003e\u003cp\u003eYes. 4.5 inch, 4-1\/2 inch and 115 mm all describe the same disc, and many people call an angle grinder flap disc a flap wheel. This collection lists discs of that size with a 7\/8 inch arbor. A flap wheel mounted on a shank is a different tool, used in a die grinder or drill.\u003c\/p\u003e\u003ch3\u003eWhat is a 40 grit 4-1\/2 inch flap disc used for?\u003c\/h3\u003e\u003cp\u003e40 grit is the coarse choice for fast stock removal: grinding down welds and edge and contour grinding. It leaves visible scratches, so most shops follow it with 60 or 80 grit. Here, 40 grit comes in zirconia and calcined alumina, in single-grit or assorted packs.\u003c\/p\u003e\u003ch3\u003eWhen should I use a 60 grit 4-1\/2 inch flap disc?\u003c\/h3\u003e\u003cp\u003eUse 60 grit when you want good stock removal with a smoother finish than 40 grit, such as blending welds, general grinding and removing rust and paint before finishing with 80 or 120 grit. It comes in zirconia, ceramic and calcined alumina, in single-grit or assorted packs.\u003c\/p\u003e\u003cp\u003eSee other sizes in \u003ca href=\"\/collections\/flap-disc\"\u003eFlap Discs\u003c\/a\u003e. For help choosing, read \u003ca href=\"\/blogs\/news\/how-to-choose-a-flap-disc\"\u003ehow to choose a flap disc\u003c\/a\u003e and \u003ca href=\"\/blogs\/news\/type-27-vs-type-29-flap-disc\"\u003eType 27 vs Type 29 flap discs\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"wa101r-10pack-4-1-2-x-7-8-premium-zirconia-density-flap-discs-industrial-grade-angle-grinder-sanding-discs-grinding-wheels-for-stainless-steel-metal-t29","title":"4-1\/2\" x 7\/8\" Premium Zirconia Type 29 Flap Discs","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.9 out of 5 from 10 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Premium Japanese zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, balance and extends disc life.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Suitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) T29\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"120 Grit \/ 10 PC","offer_id":47870704025821,"sku":"4.5-78-1122-101R-120-10","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"80 Grit \/ 10 PC","offer_id":47870704058589,"sku":"4.5-78-1122-101R-ZA80-10","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 10 PC","offer_id":47870704091357,"sku":"K3-FC9H-7WV1","price":22.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/cf0c1b96.jpg?v=1777666773"},{"product_id":"10pack-4-1-2-x-7-8-zirconia-standard-density-flap-discs-60-grit-angle-grinder-sanding-discs-grinding-wheels-for-stainless-steel-metal-t29za60","title":"4-1\/2\" x 7\/8\" Standard Density Zirconia Flap Discs, 60 Grit, for Metal \u0026 Stainless Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.4 out of 5 from 26 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSuitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003ePremium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 60.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870705172701,"sku":"71-UARV-7PTG","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/8c685969.jpg?v=1777666749"},{"product_id":"wa-50pack-4-1-2-x-7-8-calcined-alumina-high-density-flap-discs-for-metal-stainless-steel-wood-t29","title":"4-1\/2\" x 7\/8\" Calcined Alumina Type 29 Flap Discs","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.4 out of 5 from 18 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Calcined alumina grain, durable and wear-resistant, with good grinding efficiency and long disc life.\u003c\/li\u003e\n\u003cli\u003eDURABLE - Heavy-duty calcined alumina, a heat-treated form of aluminum oxide for general-purpose grinding and blending on steel.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Designed for grinding, blending, sanding and finishing on a wide range of materials such as metal, stainless steel, and wood.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm), Type 29.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 50 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"40 Grit \/ 50 PACK","offer_id":47870706057437,"sku":"7K-15E2-SKUQ","price":59.99,"currency_code":"CAD","in_stock":true},{"title":"40 Grit \/ 200 PACK","offer_id":48181897167069,"sku":null,"price":229.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 50 PACK","offer_id":47870706155741,"sku":"EQ-SFLB-MN6R","price":59.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 200 PACK","offer_id":48181897265373,"sku":null,"price":229.99,"currency_code":"CAD","in_stock":true},{"title":"80 Grit \/ 50 PACK","offer_id":47870706090205,"sku":"A4-T128-P9XP","price":59.99,"currency_code":"CAD","in_stock":true},{"title":"80 Grit \/ 200 PACK","offer_id":48181897199837,"sku":null,"price":229.99,"currency_code":"CAD","in_stock":true},{"title":"120 Grit \/ 50 PACK","offer_id":47870706122973,"sku":"CK-6RME-3X6R","price":59.99,"currency_code":"CAD","in_stock":true},{"title":"120 Grit \/ 200 PACK","offer_id":48181897232605,"sku":null,"price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/237a0815.jpg?v=1777666801"},{"product_id":"wa-10pack-4-1-2-assorted-grit-zirconia-flap-discs-including-5pcs-40-3pcs-60-and-2pcs-80-4-1-2-inch-sanding-disc-grinding-wheel-for-angle-grinder-metal-stainless-steel-woodworking","title":"4-1\/2\" x 7\/8\" Zirconia Flap Discs, Assorted 40\/60\/80 Grit, for Metal \u0026 Wood","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 40 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDURABLE - Fiberglass backers provide a balanced, smooth grind.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm)\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10pcs in total (5pcs Grit 40# + 3pcs 60# + 2pcs 80#)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870706221277,"sku":"9N-O1VN-UU80","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/53b0453b.jpg?v=1777666728"},{"product_id":"wa-10pack-4-1-2-x-7-8-zirconia-standard-density-flap-discs-80-grit-angle-grinder-sanding-discs-grinding-wheels-for-stainless-steel-metal-4-1-2-inch-t29za80","title":"4-1\/2\" x 7\/8\" Standard Density Zirconia Flap Discs, 80 Grit, for Stainless \u0026 Alloy Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.4 out of 5 from 36 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSuitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003ePremium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 80.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870706385117,"sku":"AU-W5AM-7GPA","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/1bf2887a.jpg?v=1777666733"},{"product_id":"wa101r-20pack-4-1-2-x-7-8-zirconia-40-industrial-grade-high-density-flap-disc-sanding-disc-grinding-wheel-for-angle-grinder-metal-stainless-steel-woodworking-4-1-2-inch-40-grit-115x22mm-t29","title":"4-1\/2\" x 7\/8\" 40 Grit Zirconia T29 Flap Discs for Metal \u0026 Stainless Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 172 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSuitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003ePremium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life.\u003c\/li\u003e\n\u003cli\u003eBevel Type 29 is effective for radius\/contour grinding, edge grinding, and weld blending.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 40.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 20 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"20 PC","offer_id":47870706712797,"sku":null,"price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/bb53a4dd.jpg?v=1777666720"},{"product_id":"wa-10pack-4-1-2-x-7-8-zirconia-flap-sanding-disc-grit-40-standard-density-grinding-wheel-for-angle-grinder-grinding-wheels-for-stainless-steel-metal-t29-4-1-2-inch-40","title":"4-1\/2\" x 7\/8\" Type 29 Zirconia Flap Discs for Metal \u0026 Stainless Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 305 customer ratings on our online marketplace store (40 grit 10-pack, November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAPPLICATION - Suitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003eUNMATCHED DURABILITY - Constructed with top-grade hard zirconia abrasive grain in an industrial-grade, high-density build for a robust, cost-effective grinding experience.\u003c\/li\u003e\n\u003cli\u003ePERFORMANCE - Maximum 13,300 RPM. T29 conical design. Always wear eye protection and use all safety guards per ANSI B7.1.\u003c\/li\u003e\n\u003cli\u003eVERSATILE - For grinding, blending, deburring, and finishing on metal, stainless steel, wood, concrete, and stone.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 40\/60\/80\/120\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\n\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\n\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"40 Grit \/ 10 PC","offer_id":48181750071517,"sku":"F45-32","price":22.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 10 PC","offer_id":48181750104285,"sku":null,"price":22.99,"currency_code":"CAD","in_stock":true},{"title":"80 Grit \/ 10 PC","offer_id":48181750137053,"sku":null,"price":22.99,"currency_code":"CAD","in_stock":true},{"title":"120 Grit \/ 10 PC","offer_id":48181750169821,"sku":null,"price":22.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/c736f251.jpg?v=1777666728"},{"product_id":"20pack-high-density-flap-discs","title":"4-1\/2\" \u0026 5\" High Density Zirconia Flap Discs for Angle Grinders","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.8 out of 5 from 10 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUNMATCHED DURABILITY - Constructed with top-grade zirconia abrasive grain in an industrial-grade, high-density build for a robust, cost-effective grinding experience.\u003c\/li\u003e\n\u003cli\u003eEXTRA-THICK \u0026amp; HIGH-DENSITY - Extra-thick flaps and high-density construction (packed with ~90 flap pages) deliver longer disc life, cooler grinding, and fewer changeouts.\u003c\/li\u003e\n\u003cli\u003e20 PACK VALUE - Premium high-density flap discs for contractors, welders, and DIYers tackling grinding, sanding, and finishing.\u003c\/li\u003e\n\u003cli\u003eVERSATILE - Ideal for steel, stainless steel, cast iron, aluminum, and wood. Perfect for weld grinding, edge blending, rust removal, and surface prep.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"4-1\/2 Inch \/ 20 PC","offer_id":47964405760221,"sku":"F45-33","price":39.99,"currency_code":"CAD","in_stock":true},{"title":"5 Inch \/ 20 PC","offer_id":47964405792989,"sku":"F5-19","price":47.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/0a9752d9.jpg?v=1777666845"},{"product_id":"wa-grinder-25pack-4-1-2-assorted-industrial-grade-calcined-alumina-zirconia-flap-discs-40-60-80-120-t29-sanding-disc-36-jumbo-flap-disc","title":"4-1\/2\" x 7\/8\" Assorted Calcined Alumina \u0026 Zirconia Flap Discs, Type 27 \u0026 29","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.4 out of 5 from 55 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUNMATCHED DURABILITY - 4 1\/2\" grinder discs constructed with premium calcined alumina in an industrial-grade, high-density build for a robust, cost-effective grinding experience.\u003c\/li\u003e\n\u003cli\u003eHIGH QUALITY - Calcined, durable, wear-resistant, high elasticity and grinding efficiency, low noise and long wheel life.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - For grinding, blending, sanding, and finishing on metal, stainless steel, and wood.\u003c\/li\u003e\n\u003cli\u003eASSORTED SET - T29 flap discs: 40# x10, 60# x8, 80# x3, 120# x2; plus T27 jumbo flap disc: 36# x2.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm).\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 25 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"25 PC","offer_id":47870708154589,"sku":"FAO29274578111","price":26.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/1102c9f6.jpg?v=1777666828"},{"product_id":"wa-grinder-10pack-4-1-2-x-7-8-inch-36-high-density-zirconia-aluminum-oxide-jumbo-flap-disc-industrial-grade-grinding-sanding-wheel-for-angle-grinder-coarse-grit-36-type-27","title":"4-1\/2\" x 7\/8\" Zirconia\/Aluminum Oxide Jumbo Flap Discs, 36 Grit","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.5 out of 5 from 63 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Durable, wear-resistant, high elasticity and grinding efficiency, low noise and long wheel life. Made with premium zirconia \u0026amp; aluminum grain on a durable poly-cotton cloth, with a calcium stearate coating to resist loading and glazing on softer metals.\u003c\/li\u003e\n\u003cli\u003eDURABLE - Jumbo high-density build with more flaps than a standard flap disc, for longer disc life between changes.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Designed for grinding, blending, sanding and finishing on a wide range of materials such as aluminum and other non-ferrous metals.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm), 36 grit.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this 36 grit flap disc good for aluminum?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A calcium stearate coating helps it resist loading and glazing on softer metals, and it is designed for grinding, blending, sanding, and finishing aluminum and other non-ferrous metals. The coarse 36 grit suits heavy stock removal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this 36 grit flap wheel last longer than a standard flap disc?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Its jumbo high-density build has more flaps than a standard flap disc, for longer disc life between changes, and the zirconia and aluminum oxide grain is wear-resistant. Each 4-1\/2\" disc fits a 7\/8\" arbor, and the pack holds 10. See all \u003ca href=\"\/collections\/flap-discs-4-1-2-inch\"\u003e4-1\/2\" flap discs\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870708187357,"sku":"FAZ274578036","price":24.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/7b53375f.jpg?v=1777666825"},{"product_id":"wa-5pack-4-1-2-inch-x-7-8-vsm-80-premium-ceramic-cushion-bowl-style-flexible-flap-disc-for-angle-grinder-grinding-wheel-sanding-disc-80","title":"4-1\/2\" x 7\/8\" VSM Ceramic Cushion Bowl Flexible Flap Discs, 80 Grit, for Metal \u0026 Stainless Steel","description":"\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - The distinctive cushion-style pointed flap provides optimal flexibility for contoured surfaces, 90-degree corners, hard-to-reach areas, and superior finishes.\u003c\/li\u003e\n\u003cli\u003eFEATURE - Performs applications difficult for regular coated abrasives. The interrupted flap design prevents glazing and material loading.\u003c\/li\u003e\n\u003cli\u003eDURABLE - Premium ceramic grain for fast, cool cutting and extra-long life; cool cutting permits contouring without burning the workpiece.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm), 80 grit.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 5pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the cushion\/bowl style for?\u003c\/strong\u003e\u003cbr\u003eA: The flexible pointed flaps conform to contours, corners, and curved surfaces for a superior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why ceramic grain?\u003c\/strong\u003e\u003cbr\u003eA: Ceramic self-sharpens for fast, cool cutting and longer life, ideal for stainless steel and hard alloys.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"5 PC","offer_id":47870708318429,"sku":"FCECU4578080","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/505bd0a2.jpg?v=1777666825"},{"product_id":"wa-10pack-4-1-2-x-7-8-professional-grade-premium-vsm-zirconia-density-beveled-flap-disc-grinding-sanding-wheel-for-angle-grinder-type-29","title":"4-1\/2\" x 7\/8\" Premium VSM Zirconia Beveled Type 29 Flap Discs","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.3 out of 5 from 32 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMATERIAL - Made with premium zirconia from Germany VSM. Backed by a high strength fiberglass disc enhances strength, durability, and extends disc life.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Suitable for processing and polishing of stainless steel and alloy steel. Beveled Type 29 profile for edge and weld blending.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm)\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"40 Grit \/ 10 PC","offer_id":47964404678877,"sku":"FZP294578040","price":17.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 10 PC","offer_id":47964404711645,"sku":"FZP294578060","price":17.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/945e8fc3.jpg?v=1777666825"},{"product_id":"wa-20pack-4-1-2-assorted-grit-zirconia-aluminum-oxide-flap-discs-40x10-60x5-80x4-120x1-4-1-2-inch-x-7-8-flap-disc-for-angle-grinder-sanding-disc-for-wood-metal-stainless-steel","title":"4-1\/2\" x 7\/8\" Assorted Grit Zirconia \u0026 Aluminum Oxide Flap Discs for Metal \u0026 Wood","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 172 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Fiberglass backers provide a balanced, smooth grind.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm)\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 20 PCS [Zirconia flap discs (10 pcs) + aluminum oxide (10 pcs)]\u003c\/li\u003e\n\u003cli\u003eGRIT - 40# x 10, 60# x 5, 80# x 4, 120# x 1.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"20 PC","offer_id":47870709301469,"sku":"I4-9IHD-YSI6","price":23.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/59d49ff8.jpg?v=1777666728"},{"product_id":"wa-10pcs-4-1-2-x-7-8-masonry-silicon-carbide-flap-disc-angle-grinder-for-non-metallic-marble-wood-concrete-glass-cast-iron-4-1-2-inch-grit-120","title":"4-1\/2\" x 7\/8\" Silicon Carbide Flap Discs for Stone, Marble \u0026 Granite","description":"\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Premium silicon carbide materials offer you fast, smooth polishing and a long disc life.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Ideal for polishing on granite, marble, stone, wood, glass, plexiglass, titanium and titanium alloys.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10PCS\u003c\/li\u003e\n\u003cli\u003eSilicon carbide is the hardest of all common abrasive materials. It is very sharp, but friable, leaving new sharp edges for cutting. It is initially fast-cutting but has a short life span. It is ideal for use on non-ferrous metals like aluminum, brass, bronze, magnesium and titanium and non-metallics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870709629149,"sku":"IG-E6Z0-5W78","price":15.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/ea2aad0b.jpg?v=1777666761"},{"product_id":"wa-grinder-10pack-4-1-2-x-7-8-zirconia-standard-density-flap-discs-120-grit-angle-grinder-sanding-disc-grinding-wheel-for-stainless-steel-metal-4-1-2-inch-t29za120","title":"4-1\/2\" x 7\/8\" Zirconia Type 29 Flap Discs, 120 Grit","description":"\u003cul\u003e\n\u003cli\u003eSuitable for processing and polishing of stainless steel and alloy steel.\u003c\/li\u003e\n\u003cli\u003ePremium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 120.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47870709596381,"sku":"IW-OVIX-WPBY","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/8a0cf069.jpg?v=1777666776"},{"product_id":"20pack-4-1-2-x-7-8-inch-80-premium-zirconia-flap-disc-for-angle-grinder-flap-discs-for-metalworking-and-wood-working-sanding-disc-type-29-grit-80","title":"4-1\/2\" x 7\/8\" 80 Grit Zirconia Type 29 Flap Discs for Metal \u0026 Wood","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 172 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAPPLICATION - Suitable for metal and woodworking, concrete grinding, finishing, and stone smoothing — grinding, deburring, and light grinding.\u003c\/li\u003e\n\u003cli\u003eHIGH QUALITY - Premium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life. Holds up to high temperatures and pressure.\u003c\/li\u003e\n\u003cli\u003eDESIGN - Bevel Type 29 is effective for radius\/contour grinding, edge grinding, and weld blending.\u003c\/li\u003e\n\u003cli\u003ePERFORMANCE - Maximum 13,300 RPM. Use eye protection and all safety guards per ANSI B7.1.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 80.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 20 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"20 PC","offer_id":47870711365853,"sku":"RC-YFQE-XUHP","price":21.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/aebeec9f.jpg?v=1777666720"},{"product_id":"wa-3pcs-4-1-2-x7-8-half-curved-edge-60-fillet-weld-vsm-ceramic-flap-disc-sanding-disc-grinding-wheel-for-angle-grinder-metal-stainless-steel-4-1-2-inch-60","title":"4-1\/2\" x 7\/8\" Half-Curved Edge 60 Grit Ceramic Flap Discs for Metal \u0026 Stainless Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 12 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMATERIAL - Made with premium German VSM abrasive cloth. Ceramic grains keep super-sharp points that cut exceptionally fast with less pressure.\u003c\/li\u003e\n\u003cli\u003eCOOL GRINDING - Runs cooler, reducing metal discoloration, oxidation, and heat-related stress cracks.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Half-curved edge design for optimal grinding on fillet welds, corners, and hard-to-reach areas.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 60#.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 3 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why ceramic grain?\u003c\/strong\u003e\u003cbr\u003eA: Ceramic self-sharpens for fast, cool cutting and longer life, ideal for stainless steel and hard alloys.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"3 PC","offer_id":47870711726301,"sku":"UW-D2R3-MZVP","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/92967ac8.jpg?v=1777666744"},{"product_id":"20pack-4-1-2-x-7-8-inch-professional-grade-60-premium-zirconia-flap-disc-for-angle-grinder-flap-discs-for-metalworking-and-wood-working-sanding-disc-type-29-grit-60","title":"4-1\/2\" x 7\/8\" 60 Grit Zirconia Type 29 Flap Discs for Metal \u0026 Wood","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.6 out of 5 from 172 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAPPLICATION - Suitable for processing and polishing of stainless steel and alloy steel. Coarse zirconia alumina tailored for aggressive grinding on robust materials such as metal.\u003c\/li\u003e\n\u003cli\u003eHIGH QUALITY - Premium zirconia abrasive cloth backed by a high strength fiberglass disc enhances strength, durability, and extends disc life. Holds up to high temperatures and pressure.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm) Grit 60.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 20 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"20 PC","offer_id":47870712348893,"sku":null,"price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/3e095676.jpg?v=1777666720"},{"product_id":"10pack-4-1-2-x-7-8-calcined-alumina-grit-40-60-80-high-density-industrial-grade-flap-discs-for-metal-stainless-steel-wood-beveled-t29","title":"4-1\/2\" x 7\/8\" Calcined Alumina Type 29 Flap Discs, 40, 60 or 80 Grit","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.7 out of 5 from 7 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Calcined alumina grain, durable and wear-resistant, with good grinding efficiency and long disc life.\u003c\/li\u003e\n\u003cli\u003eDURABLE - Heavy-duty calcined alumina, a heat-treated form of aluminum oxide for general-purpose grinding and blending on steel. Type 29 conical profile for edge and weld blending.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Designed for grinding, blending, sanding and finishing on a wide range of materials such as metal, stainless steel, and wood.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor (115mmx22mm). Choose 40, 60 or 80 grit.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"40 Grit \/ 10 PC","offer_id":47964400386269,"sku":"EW-JH2W-DNY8","price":15.99,"currency_code":"CAD","in_stock":true},{"title":"60 Grit \/ 10 PC","offer_id":47964400419037,"sku":"NG-5ITF-QX85","price":15.99,"currency_code":"CAD","in_stock":true},{"title":"80 Grit \/ 10 PC","offer_id":47964400451805,"sku":"SS-7NM2-ADPH","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/9f0c60f5.jpg?v=1777666740"},{"product_id":"value-pack-4-1-2-x-7-8-zirconia-flap-discs-for-angle-grinder-sanding-discs-grinding-wheels-for-stainless-steel-metal-t29","title":"4-1\/2\" x 7\/8\" Zirconia Type 29 Flap Discs for Metal \u0026 Stainless Steel","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.5 out of 5 from 292 customer ratings on our online marketplace store (40-pack, November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Durable, wear-resistant, high elasticity and grinding efficiency, low noise and long wheel life. CAUTION: wear proper eye, face, body, and respiratory protection; comply with ANSI B7.1 \u0026amp; OSHA; do not drop; do not exceed max RPM.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Designed for grinding, blending, sanding, and finishing on a wide range of materials such as metal, stainless steel, and wood.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mmx22mm), Type 29. Available in assorted grit packs (40\/60\/80\/120).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard 4-1\/2\" angle grinders with a 7\/8\" arbor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (40) for heavy stock removal, medium (60–80) for general grinding, and fine (120) for finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"Grit 40(x10), Grit 60(x10), Grit 80(x10), Grit 120(x10)","offer_id":47964398616797,"sku":"45-ZA-1022-ASSORT-40","price":48.09,"currency_code":"CAD","in_stock":true},{"title":"Grit 40(x10), Grit 60(x10), Grit 80(x20)","offer_id":47964398649565,"sku":"45-ZA-A-922-40","price":46.99,"currency_code":"CAD","in_stock":true},{"title":"Grit 40(x20), Grit 60(x10), Grit 80(x10), Grit 120(x2)","offer_id":47964398682333,"sku":"FKIT-18","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Grit 60(x40)","offer_id":47964398715101,"sku":"FKIT-19","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Grit 40 (x40)","offer_id":47964398747869,"sku":"FKIT-20","price":48.99,"currency_code":"CAD","in_stock":true},{"title":"Grit 80(x40)","offer_id":47964398780637,"sku":"FZA294578080-40","price":42.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/9b9b4f37.jpg?v=1777666781"},{"product_id":"10pack-4-1-2-x7-8-ceramic-grain-flap-sanding-disc-60-heavy-duty-flap-disc-for-metal-woodworking-ceramic-grain-sg-grinding-wheel-cool-cut-used-on-angle-grinder-grit-60pack-of-10","title":"4-1\/2\" x 7\/8\" Ceramic Grain Flap Sanding Discs, 60 Grit","description":"\u003cul\u003e\n\u003cli\u003eAdvanced ceramic abrasive technology — premium ceramic grains that self-sharpen during use for consistent, high-speed cutting power.\u003c\/li\u003e\n\u003cli\u003eCooler grinding, less workpiece damage — reduces heat buildup and minimizes discoloration, burning, and warping on stainless steel and heat-sensitive metals.\u003c\/li\u003e\n\u003cli\u003eLonger life than aluminum oxide: the ceramic grain self-sharpens as it wears, so it keeps cutting where aluminum oxide grain dulls.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty performance on hard metals — for grinding, beveling, and weld blending on stainless steel, carbon steel, and titanium.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" x 7\/8\" (115mm x 22mm) Grit 60#.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47964403663069,"sku":"MU-SAO2-9JX6","price":23.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/b39521be.jpg?v=1777666748"},{"product_id":"wa-10pack-4-1-2-x-7-8-masonry-silicon-carbide-flap-disc-angle-grinder-for-non-metallic-marble-wood-concrete-glass-cast-iron-4-1-2-inch-grit-120","title":"4-1\/2\" x 7\/8\" Silicon Carbide Masonry Flap Discs, 120 Grit","description":"\u003cul\u003e\n\u003cli\u003eHIGH QUALITY - Premium silicon carbide materials offer you fast, smooth polishing and a long disc life.\u003c\/li\u003e\n\u003cli\u003eMULTIPURPOSE - Ideal for polishing on granite, marble, stone, wood, glass, plexiglass, titanium and titanium alloys.\u003c\/li\u003e\n\u003cli\u003eSIZE - 4 1\/2\" Diameter, 7\/8\" Arbor, 120 grit.\u003c\/li\u003e\n\u003cli\u003ePACKAGE - 10 PACK\u003c\/li\u003e\n\u003cli\u003eSilicon carbide is the hardest of all common abrasive materials. It is very sharp, but friable, leaving new sharp edges for cutting. It is ideal for use on non-ferrous metals like aluminum, brass, bronze, magnesium and titanium and non-metallics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a flap disc used for?\u003c\/strong\u003e\u003cbr\u003eA: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type 27 and Type 29 flap discs?\u003c\/strong\u003e\u003cbr\u003eA: Type 27 is flat for surface and edge work on flat areas; Type 29 is conical for more aggressive stock removal and better contact on edges and contours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What grinder do these fit?\u003c\/strong\u003e\u003cbr\u003eA: Standard angle grinders matching the arbor size listed in the title and specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which grit should I choose?\u003c\/strong\u003e\u003cbr\u003eA: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"10 PC","offer_id":47964404089053,"sku":"IG-E6Z0-5W78","price":15.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/ea2aad0b.jpg?v=1777666761"}],"url":"https:\/\/whitbyabrasives.ca\/collections\/flap-discs-4-1-2-inch.oembed","provider":"Whitby Abrasives Inc.","version":"1.0","type":"link"}