Depressed Center Grinding Wheel Abrasive Material Aluminum Oxide Connector Size 7/8 in Connector Type Unthreaded Hole Grit 24 Overall Diameter 7 in Overall Thickness 0.125 in Primary Material Applicationn Stainless Steel Compatible Tool Type Angle Grinder Series CC-Grind Wheel Type Type 27 Maximum Operating Speed 8 500 RPM Grade Extra Coarse