FOXBC 4-1/2 inch Ceramic Flap Disc for Angle Grinder with Speed HUB, 40 Grit, Type 27, Grinding and Polishing for Metal, 5 Pack

These spin on by hand with the built-in speed hub, so there's no flange nut and no hunting for the grinder wrench. The Type 27 flat profile is best for blending welds flush on flat stock, and 40-grit ceramic removes metal fast. 5-pack.

Specs: 4-1/2", 40 grit ceramic, Type 27, speed hub.