- Use a dental handpiece which can hold the shank precisely. - Diameter of Friction grip shank: p1.6mm. - Diameter of Contra Angle shank xp2.35mm. - Use a handpiece which could control at allowable engine speed. - Use a handpiece with water spray system. - Height: 5 cm. - Width: 7 cm. - Length: 1 cm. - Weight: 30 gr. **For further product information, please contact Chat Support**