Cut-Off & Grinding Wheel, Abrasive Material Aluminum Oxide, Connector Size 5/8 in, Connector Type Unthreaded Hole, Grit 24, Overall Diameter 4 in, Overall Thickness 0.125 in, Primary Material Application Stainless Steel, Steel, Compatible Tool Type Angle Grinder, Series Metal, Wheel Type Type 27, Maximum Operating Speed 8,600 RPM, Grade Extra Coarse