Depressed Center Cut-Off Wheel, Abrasive Material Aluminum Oxide, Connector Size 5/8 in, Connector Type Unthreaded Hole, Grit 60, Overall Diameter 4 in, Overall Thickness 0.045 in, Primary Material Application Stainless Steel, Steel, Compatible Tool Type Angle Grinder, Series A60T, Wheel Type Type 27, Maximum Operating Speed 15,200 RPM, Grade Medium