This product is used to re-treat the root canal . Due to its high cutting efficiency, re-treatment is used in the process of removing material in channels. Which are designed to clean the canal in (D1) crown, (D2) middle and (D3) apical . In addition, retreatment files, unlike normal files, have a very sharp tip. Kit Contains: - 2 x D1 16 mm. - 2 x D2 18 mm. - 2 x D3 22 mm. **For further product information, please contact Chat Support**