- This product has a stainless steel working part which is coated with fine diamond crystal. - It is defined as the rotary grinding instruments for hard tissues such as tooth and bones. - It is used for connecting with dental handpiece. - It can also be used for grinding metal, plastic, porcelain and other hard materials. - Type: Standard. - Color: Blue. - ISO: 170. - Diameter: 018. - Working: 5.2. - Overall Length: 20.1. **For further product information , please contact Chat Support**