- Sani K-Files 25mm 15-40. - Resistance design of cross section makes good fracture formation of ledge or perforation. - The square no cutting edge on apex, it can prevent the preparation technique to rotate and cut, with elasticity. - Using the most common root canal ensures super fracture resistance and high Special medical stainless steel ensure high fracture resistance and high elasticity. - The most commonly used root canal preparation technology is used for rotary cutting, and there is no cutting edge at the tip to prevent the formation of steps or side penetration. - The cross section is square and has good breakage resistance Stainless steel. - Size #15-40. - Length: 25mm. - Strip: 6 Pcs. **For further product information, please contact Chat Support**