- Comfortable and easy to grip handle. - Easy Identification of instruments through ISO color. - K-Files are used to enlarge canal after debridement with a reamer. - After reamer, use a file one size smaller than the reamer so that the fragments of dentinal shavings can be carried away from the root-canal walls. - Size: #40. - Length: 25 mm. **For further product information , please contact Chat Support**