- Made of high quality Niti Memory Alloy. - Progressive taper design improves flexibility and cutting efficiency, especially in tighter or more curved canals. - Sizes: SX, S1, S2, F1, F2, F3. - Length: SX with 19mm, S1/S2/F1/F2/F3 available in 21mm, 25mm and 31mm. **For further product information , please contact Chat support**