1. This diamond bur is especially designed for dentists( dental clinic); 2. It is used for high speed dental handpieces (shank dia.: 1.60 mm); 3. Nearly 200 specifications are prepared for your choice freely (pls leave your email address to get our full updated catalog and price list); 4. Top excellent quality is praised by customers all over world; 5. In additional, it also can be used by Jewery operators.