- The most effective instruments with a very high cutting ability for root canal instrumentation. - Endostar S-files are the most effective instruments with a very high cutting ability for root canal instrumentation. - They are designed as composition of two cutting edges of H-file. - The S-files are used to enlarge the canal with a longitudinal filling or a rotational cutting action. - Size: 90/140. - Length: 25 mm. **For further product information, please contact Chat Support**