Specifications
| Product Type | Abrasive kit: flap discs, strip & clean discs + nylon polishing discs |
|---|---|
| Diameter | 4-1/2 in (115 mm) |
| Arbor / Bore | 7/8 in (22 mm) |
| Pack Contents | High density zirconia flap discs x20, fillet weld flap discs 60 grit x5 (calcined alumina), strip & clean discs x5, nylon fiber polishing discs 240 grit x5 |
| Pieces per Pack | 35 |
| Abrasive Grain | Zirconia Alumina, Calcined Alumina (flap discs); nylon fiber (polishing discs) |
| Suitable Materials | Steel, Stainless Steel, Cast Iron, Aluminum |
| Application | Weld grinding, Fillet weld shaping, Paint and rust removal, Satin finishing |
| Compatible Tool | Angle Grinder |
| Brand | Whitby Abrasives |
Description
One box for fillet welds and corner joints on a 4-1/2" angle grinder, from cleaning the joint to a satin finish. The kit holds 35 discs across four packs, all 4-1/2" x 7/8" arbor.
What's in the kit
- 20 PACK 4-1/2" High Density Zirconia Flap Discs for weld grinding and stock removal on steel, stainless steel and cast iron.
- 5 PACK 4-1/2" Curved Edge Fillet Weld Flap Discs, 60 grit (calcined alumina). The curved edge reaches into fillet welds, inside corners and contours.
- 5 PACK 4-1/2" Strip & Clean Discs for removing paint, rust, sealant and weld spatter.
- 5 PACK 4-1/2" Nylon Fiber Polishing Discs, 240 grit for blending and a satin finish on stainless steel, aluminum and other metals.
Fits
4-1/2" angle grinders with a 7/8" arbor.
Frequently asked questions
Q: Can I buy the packs separately?
A: Yes. Each pack in this kit is also sold on its own. The kit price is the same as the four packs added together, in one order.
Q: What order do I use them in?
A: Clean the joint with a strip & clean disc, grind the weld down with a high density flap disc, shape the fillet with the curved edge disc, then finish with the nylon polishing disc.
Safety
Check that your grinder's rated speed does not exceed the maximum RPM marked on each disc (strip & clean discs: 11,000 RPM maximum). Run the nylon polishing discs at lower speed, starting below 5,000 RPM. Always use the grinder guard and wear eye, face, hand and hearing protection. Inspect every disc before use and set aside any disc that is cracked or damaged.
Why choose Whitby Abrasives
Whitby Abrasives Inc. is a Canadian supplier of grinding, cutting, sanding and finishing abrasives, stocked in Whitby, Ontario and shipped across Canada and the US. Have a question about sizing or the right grit for your project? Our team is happy to help.




