Ceramic, Connector Size 1 1/4 in, Connector Type Unthreaded Hole, Grit 46, Overall Diameter 7 in, Overall Thickness 1/2 in, Compatible Tool Type Cylindrical Grinder, Surface Grinder, Tool and Cutter Grinder, Primary Material Applicationn Cast Iron, Nickel Alloy, Stainless Steel, Steel, Titanium, Specification 5SG46-HVSP, Wheel Hardness H, Wheel Type Type 1, Maximum Operating Speed 3,600 RPM, Series 5SG, Grade Coarse, Bond Type Vitrified, Color Blue, Item Straight Grinding Wheel