- The k-flex files from the Spanish brand Zarc have been designed to be more flexible in order to respect the morphology of the canal and be safer. - They are distributed in sterile blisters, with high-visibility red stops and a non-active tip to follow the anatomy of the root canal, avoiding perforations. - Size: Assorted.( #15-20-25-30-35-40). - Length: 25 mm. Pack of 6 pcs. **For further product information, please contact Chat Support**