Zirconia Alumina Connector Size 5/8 in Connector Type Unthreaded Hole Grit 14 Overall Diameter 8 in Overall Thickness 3/4 in Compatible Tool Type Die Grinder Primary Material Applicationn Nickel Alloy Stainless Steel Steel Titanium Tool Steel Specification NV14-S Wheel Hardness S Wheel Type Type 1 Series BlueFire 4NV ZA Grade Extra Coarse Item Portable Snagging Wheel