Made of high quality NiTi alloy, after treatment activation switch turns blue. Flexible and strong, pre-curved files suitable form bend the curved root canal. Sharper and better performance for preparing the channel. Size: - SX 19 mm. - S1 25 mm. - S2 25 mm. - F1 25 mm. - F2 25 mm. - F3 25 mm. **For further product information, please contact Chat Support**