Depressed Center Cut-Off Wheel Abrasive Material Aluminum Oxide Connector Size 5/8 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 4 in Overall Thickness 0.045 in Primary Material Applicationn Stainless Steel Steel Compatible Tool Type Angle Grinder Series A60T Wheel Type Type 27 Maximum Operating Speed 15 200 RPM Grade Medium