11143A 10 Pack Zirconia Flap Discs 4-1/2 for Angle Grinder, 60 Grit Flapper Whee
Model 11143A. Part Number 11143A. Zirconia flap discs can be used on other materials like rubber, plastic, fiberglass, and wood, but aluminum oxide would be a good alternative if price and surface finish are a concern.