Zirconia Alumina, Connector Size 3/8 in, Connector Type Unthreaded Hole, Grit 20, Overall Diameter 3 in, Overall Thickness 1/4 in, Compatible Tool Type Die Grinder, Primary Material Application Nickel Alloy, Stainless Steel, Steel, Titanium, Tool Steel, Specification NV20-T, Wheel Hardness T, Wheel Type Type 1, Series BlueFire 4NV ZA, Grade Extra Coarse, Item Portable Snagging Wheel