Resin Mounted Point, Abrasive Material Zirconia Alumina, Bond Type Resin, Overall Dia. 3/4 in, Overall Thickness 2 1/2 in, Shank Dia. 1/4 in, Grit 30, Shape A1, Primary Material Application Stainless Steel, Carbon Steel, Shank Length 1 1/2 in, Specification CHARGER 30 GRIT, Operating Speed - Maximum 20,960 RPM, Series Charger NZ, Grade Extra Coarse, Compatible Tool Type Die Grinder, Flexible Shaft Grinder, Straight Grinder, Pencil Grinder, Drills