Depressed Center -Off Wheel, Abrasive Material Aluminum Oxide, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Grit 24, Overall Diameter 9 in, Overall Thickness 0.0625 in, Primary Material Applicationn Steel, Compatible Tool Type Angle Grinder, Series Gemini RightCut, Wheel Type Type 27, Maximum Operating Speed 6,600 RPM, Grade Extra Coarse