Specifications
| Product Type | Flap Disc |
|---|---|
| Diameter | 4 in (100 mm) |
| Arbor / Bore | 5/8 in (16 mm) |
| Grit | 40 / 60 / 80 / 120 (assorted) |
| Pack Contents | 40 grit x6, 60 grit x6, 80 grit x6, 120 grit x2 |
| Pieces per Pack | 20 |
| Abrasive Grain | Zirconia & Ceramic blend |
| Suitable Materials | Metal, Wood, Concrete, Stone |
| Application | Grinding, Deburring, Rust removal, Finishing |
| Compatible Tool | Angle Grinder |
| Max. Operating Speed | 15,300 RPM |
| Brand | Whitby Abrasives |
Description
- ENHANCED ZIRCONIA - Improved zirconia and ceramic blend grain offers greater strength and durability than aluminum oxide for demanding, heavy-duty applications.
- MULTIPURPOSE - Suitable for metal and woodworking, concrete grinding, finishing, and stone smoothing — grinding, deburring, rust removal, and more.
- SIZE - 4" Diameter, 5/8" Arbor.
- GRITS - 40# x6, 60# x6, 80# x6, 120# x2.
- PACKAGE - 20 pcs.
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 4" disc with a 5/8" arbor.
Q: Which grit should I choose?
A: Use a coarse grit (36–40) for heavy stock removal, medium (60–80) for general grinding, and fine (120+) for blending and finishing.
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.