Depressed Center Cut-Off Wheel Abrasive Material Aluminum Oxide Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 24 Overall Diameter 4 1/2 in Overall Thickness 0.0938 in Primary Material Applicationn Stainless Steel Steel Compatible Tool Type Angle Grinder Series Gemini Wheel Type Type 27 Maximum Operating Speed 13 580 RPM Grade Extra Coarse