Abrasive Cut-Off Wheel Abrasive Material Aluminum Oxide Grit 30 Connector Size 7/8 in Connector Type Unthreaded Hole Overall Diameter 4 1/2 in Overall Thickness 0.0938 in Compatible Tool Type Angle Grinder Primary Material Applicationn Stainless Steel Series A30S Wheel Type Type 1 Specification A30S Maximum Operating Speed 13 300 RPM