- The material of the working cutting and shank is stainless steel of increased strength. - Very large variance (180 - 212 microns). - The allowable speed of rotation is 450,000 rpm. - Type: Super Coarse. - Color: Black. - ISO: 039. - Diameter: 034. - Working: 5.1. - Overall Length: 19.2. **For further product information, please contact Chat Support**