Resin Mounted Point Abrasive Material Zirconia Alumina Bond Type Resin Overall Dia 1/2 in Overall Thickness 2 in Shank Dia 1/4 in Grit 30 Shape W189 Primary Material Application Stainless Steel Carbon Steel Shank Length 1 1/2 in Specification CHARGER 30 GRIT Operating Speed - Maximum 26 830 RPM Series Charger NZ Grade Extra Coarse Compatible Tool Type Die Grinder Flexible Shaft Grinder Straight Grinder Pencil Grinder Drills