Depressed Center Cut-Off Wheel Abrasive Material Ceramic Connector Size 7/8 in Connector Type Unthreaded Hole Grit 36 Overall Diameter 4 1/2 in Overall Thickness 0.045 in Primary Material Applicationn Cast Iron Stainless Steel Steel Compatible Tool Type Angle Grinder Series Saitech Wheel Type Type 27 Maximum Operating Speed 13 300 RPM Grade Extra Coarse