Aluminum Oxide, Connector Size 3 in, Connector Type Unthreaded Hole, Grit 46, Overall Diameter 12 in, Overall Thickness 1 1/4 in, Compatible Tool Type Cylindrical Grinder, Surface Grinder, Tool and Cutter Grinder, Primary Material Application Aluminum, Cast Iron, Stainless Steel, Steel, Tool Steel, Specification 32A46-IVBE, Wheel Hardness I, Wheel Type Type 1, Maximum Operating Speed 2, 070 RPM, Series 32A, Grade Coarse, Bond Type Vitrified, Color Purple, Item Straight Grinding Wheel. This item has been restricted from sale in the following state (s): []