Depressed Center Grinding Wheel, Abrasive Material Silicon Carbide, Connector Size 7/8 in, Connector Type Unthreaded Hole, Grit 24, Overall Diameter 9 in, Overall Thickness 0.25 in, Primary Material Applicationn Stainless Steel, Steel, Compatible Tool Type Angle Grinder, Series C24N, Wheel Type Type 27, Maximum Operating Speed 6,600 RPM, Grade Extra Coarse