Depressed Center Grinding Wheel, Abrasive Material Zirconia Alumina, Connector Size 7/8 in, Connector Type Unthreaded Hole, Grit 24, Overall Diameter 9 in, Overall Thickness 0.25 in, Primary Material Application Cast Iron, Steel, Compatible Tool Type Angle Grinder, Series Z24R, Wheel Type Type 27, Maximum Operating Speed 6, 600 RPM, Grade Extra Coarse. This item has been restricted from sale in the following state (s): []