Depressed Center -Off Wheel, Abrasive Material Aluminum Oxide, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Grit 60, Overall Diameter 6 in, Overall Thickness 0.09 in, Primary Material Applicationn Steel, Compatible Tool Type Angle Grinder, Series A60S, Wheel Type Type 27, Maximum Operating Speed 10,200 RPM, Grade Medium