Depressed Center Grinding Wheel, Abrasive Material Zirconia Alumina, Connector Size 7/8 in, Connector Type Unthreaded Hole, Grit 24, Overall Diameter 5 in, Overall Thickness 0.25 in, Primary Material Application Cast Iron, Stainless Steel, Steel, Compatible Tool Type Angle Grinder, Series Z-Tech Z24R, Wheel Type Type 27, Maximum Operating Speed 12,200 RPM, Grade Extra Coarse