Depressed Center Cut-Off Wheel Abrasive Material Ceramic Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 46 Overall Diameter 4 1/2 in Overall Thickness 0.045 in Primary Material Applicationn Cast Iron Nickel Alloy Stainless Steel Compatible Tool Type Angle Grinder Series Elite Wheel Type Type 27 Maximum Operating Speed 13 300 RPM