Abrasive -Off Wheel, Abrasive Material Aluminum Oxide, Grit 46, Connector Size 5/8 in, Connector Type Unthreaded Hole, Overall Diameter 4 in, Overall Thickness 0.045 in, Compatible Tool Type Angle Grinder, Primary Material Applicationn Steel, Series Carbo Gold , Wheel Type Type 1, Maximum Operating Speed 15,280 RPM, Reinforced Status Reinforced, Bond Type Resin