Made of high-quality NITI alloy with good flexibility and super elasticity. Perfect cutting angles and thread excellent cutting efficiency, and simple and accurate preparation. Strong debris removal ability powered by rotary file, making more safer. Recommended speed: 250 RPM. Torque: 3 Ncm. - Size: #17. - Taper: 8%. - Length: 19 mm. **For further product information, please contact Chat Support**