- The material of the working cutting part and shank is stainless steel of increased strength. - Permissible rotation speed 450,000 rpm. - Very coarse fineness (180 - 212 microns). - Type: super coarse. - Color: black. - ISO: 111. - Diameter: 016. - Working: 8.3. - Overall length: 22.1 **For further product information, please contact Chat Support**