- S-Blue 4 files kit is designed to get through tough canals. - Perfect owned design for years popular. - Sharp cutting flutes for better cutting efficiency. - Greater cyclic fatigue resistance & outstanding flexibility. - Safety non-cutting tip minimizes risk of ledge formation. - Kit contains: - #17/08. - #20/04. - #25/04. - #30/04. **For further product information , please contact Chat Support**