Abrasive Cut-Off Wheel Abrasive Material Ceramic Connector Size 7/8 in Connector Type Unthreaded Hole Overall Diameter 4 1/2 in Overall Thickness 0.045 in Compatible Tool Type Angle Grinder Primary Material Applicationn Nickel Alloy Stainless Steel Steel Series XP Ceramic Wheel Type Type 1 Maximum Operating Speed 13 300 RPM