Specifications
| Product Type | Abrasive kit: flap discs + strip & clean discs |
|---|---|
| Diameter | 4-1/2 in (115 mm) |
| Arbor / Bore | 7/8 in (22 mm) |
| Pack Contents | High density zirconia flap discs x20, assorted calcined alumina & zirconia flap discs x25 (Type 29 in 40, 60, 80 and 120 grit plus two 36 grit Type 27 jumbo discs), strip & clean discs x5 |
| Pieces per Pack | 50 |
| Abrasive Grain | Zirconia Alumina, Calcined Alumina (flap discs) |
| Suitable Materials | Steel, Stainless Steel, Cast Iron |
| Application | Weld grinding, Edge blending, Stock removal, Paint and rust removal |
| Compatible Tool | Angle Grinder |
| Brand | Whitby Abrasives |
Description
One box for taking a weld from rough to clean on a 4-1/2" angle grinder. The kit holds 50 discs across three 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, edge blending and stock removal on steel, stainless steel and cast iron.
- 25 PACK 4-1/2" Assorted Calcined Alumina & Zirconia Flap Discs: Type 29 discs in 40, 60, 80 and 120 grit plus two 36 grit Type 27 jumbo discs, so you can step from heavy removal down to a finish.
- 5 PACK 4-1/2" Strip & Clean Discs for removing paint, rust, sealant and weld spatter before and after welding.
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 three packs added together, in one order.
Q: Which disc do I use first?
A: Clean the joint with a strip & clean disc, grind the weld down with a coarse flap disc (36 to 40 grit), then blend and finish with 60, 80 and 120 grit.
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). 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.



