Depressed Center Cut-Off Wheel Abrasive Material Ceramic Connector Size 7/8 in Connector Type Unthreaded Hole Grit 36 Overall Diameter 7 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 8 500 RPM Grade Extra Coarse