Depressed Center Cut-Off Wheel Abrasive Material Ceramic Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 24 Overall Diameter 7 in Overall Thickness 0.125 in Primary Material Applicationn Cast Iron Compatible Tool Type Angle Grinder Series Norton NorZon Plus Wheel Type Type 27 Maximum Operating Speed 8 600 RPM Grade Extra Coarse