Abrasive -Off Wheel, Abrasive Material Zirconia Alumina, Grit 36, Connector Size 7/8 in, Connector Type Unthreaded Hole, Overall Diameter 4 1/2 in, Overall Thickness 0.045 in, Compatible Tool Type Angle Grinder, Circular Saw, Primary Material Applicationn Stainless Steel, Steel, Series Z-Tech, Wheel Type Type 1, Maximum Operating Speed 13,300 RPM, Reinforced Status Reinforced, Bond Type Resin