Depressed Center Wheel, Abrasive Material Zirconia Alumina, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Grit 30, Overall Diameter 9 in, Overall Thickness 0.0938 in, Primary Material Application Aluminum, Brass, Bronze, Copper, Compatible Tool Type Angle Grinder, Series BlueFire, Wheel Type Type 27