Aluminum Oxide, Connector Size 1 in, Connector Type Unthreaded Hole, Grit 150, Overall Diameter 8 in, Overall Thickness 1 in, Compatible Tool Type Bench Grinder, Pedestal Grinder, Primary Material Application Tool Steel, Wheel Hardness Not Rated, Wheel Type Type 1, Maximum Operating Speed 3, 600 RPM, Reducer Bushing Size 5/8 in, 3/4 in, 7/8 in, Series Premium Alundum, Grade Very Fine, Bond Type Vitrified, Color White, Item Straight Grinding Wheel. This item has been restricted from sale in the following state (s): []