Specifications
| Product Type | Flap Disc |
|---|---|
| Diameter | 4-1/2 in (115 mm) |
| Arbor / Bore | 7/8 in (22 mm) |
| Grit | 80 |
| Pieces per Pack | 5 |
| Abrasive Grain | Zirconia Alumina |
| Backing | Fiberglass |
| Suitable Materials | Metal, Stainless Steel |
| Application | Grinding, Blending, Deburring, Finishing |
| Compatible Tool | Angle Grinder |
| Max. Operating Speed | 13,300 RPM |
| Brand | Whitby Abrasives |
Description
Whitby Abrasives 4-1/2" curved-edge zirconia flap discs combine aggressive grinding and finishing in one abrasive, with a half-curved face that excels on fillet welds, corners, and contoured surfaces. Constructed with top-grade hard zirconia grain on a high-strength fiberglass backing, this 5-pack of 80-grit discs delivers fast stock removal and a long, cost-effective service life on metal and stainless steel.
Key features
- Curved edge for fillet welds, corners, and hard-to-reach areas
- Industrial-grade high-density zirconia grain for durability
- Grinds and finishes in one step
- High-strength fiberglass backing runs cool and resists cracking
- Fits standard angle grinders with a 7/8" arbor
Applications
- Fillet weld grinding and blending
- Corner and contour work
- Deburring and edge work
- Surface finishing on steel and stainless steel
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 curved edge for?
A: The half-curved face improves contact on fillet welds, corners, and contoured surfaces.
Q: What grinder do these fit?
A: Standard 4-1/2" angle grinders with a 7/8" arbor.
Q: Which grit is this?
A: 80 grit — a medium grit for general grinding, 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.