Specifications
| Product Type | Flap Disc |
|---|---|
| Diameter | 5 in (125 mm) |
| Arbor / Bore | 7/8 in (22 mm) |
| Grit | 40 / 60 / 120 (assorted) |
| Pack Contents | Zirconia 40 grit x10, Calcined Alumina 60 grit x10, Aluminum Oxide 120 grit x10 |
| Pieces per Pack | 30 |
| Abrasive Grain | Zirconia Alumina / Calcined Alumina / Aluminum Oxide |
| Backing | Fiberglass |
| Suitable Materials | Metal, Wood |
| Application | Grinding, Blending, Finishing |
| Compatible Tool | Angle Grinder |
| Max. Operating Speed | 12,250 RPM |
| Brand | Whitby Abrasives |
Description
- HIGH QUALITY - Fiberglass backers provide a balanced, smooth grind.
- SIZE - 5" Diameter, 7/8" Arbor (125mmx22mm)
- PACKAGE - 30 PACK [Zirconia 40 grit (10), Calcined Alumina 60 grit (10), Aluminum Oxide 120 grit (10)]
Frequently asked questions
Q: What is a flap disc used for?
A: It grinds and finishes in one step — weld blending, deburring, rust and paint removal, and surface finishing on metal and wood.
Q: What is the difference between Type 27 and Type 29 flap discs?
A: 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.
Q: What grinder do these fit?
A: Angle grinders that accept a 5" disc with a 7/8" arbor.
Q: Which grit should I choose?
A: This assortment includes coarse 40, medium 60, and fine 120 grit — start coarse and step up to finish.
Why choose Whitby Abrasives
Whitby 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.