Make fast, clean cuts in ferrous metals and stainless steel with these abrasive cut-off wheels! Tough aluminum oxide abrasive is continuously exposed during use to maintain an aggressive cutting edge. Designed for use with your angle grinder or high speed cutter, these cut-off wheels are fully reinforced with fiberglass mesh for added safety and controlled performance. Abrasive material Aluminum oxide Application Metal Diameter 3 in. Grit 40 Maximum speed (rpm) 22,000 RPM Quantity 10 Wheel thickness (in.) 1/16 in. Arbor size 3/8 in. Weight 0.30 lb.