One unique and simple sequence. Same instruments for root canal shaping and canal retreatment Same sequence for simple curved and narrow canals of mono-radicular teeth and molars. Triangular cross-section: Better cutting efficiency. Strong resistance to breakage. - Kit contains: - 1 coronal 17 mm. - 1 median 19 mm. - 1 apical 1 19 mm. - 1 apical 2 19 mm. - 2 manual steel files 25 mm No.10 & No.15. **For further product information, please contact Chat Support**