Depressed Center Grinding Wheel, Abrasive Material Aluminum Oxide, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Grit 36, Overall Diameter 7 in, Overall Thickness 0.125 in, Primary Material Applicationn Stainless Steel, Steel, Compatible Tool Type Angle Grinder, Series Gemini Flexible, Wheel Type Type 29, Maximum Operating Speed 8,600 RPM, Grade Extra Coarse