Depressed Center Cut-Off Wheel, Abrasive Material Aluminum Oxide, Connector Size 7/8 in, Connector Type Unthreaded Hole, Grit 60, Overall Diameter 4 1/2 in, Overall Thickness 0.045 in, Primary Material Application Stainless Steel, Compatible Tool Type Angle Grinder, Series A60S, Wheel Type Type 27, Maximum Operating Speed 13,300 RPM, Grade Medium