- EdgeEndo XR files are used in Endodontics for retreating endodontically treated teeth by the removal of root canal filling. - Made of nickel-titanium alloy. - Unwinding Safety feature. - Manufacturer Speed (300-500 rpm) & Torque (3 N.cm). Pack Contains: - Available sizes R4,R3,R2,R1 with 25 tip size: - R1 (Taper 0.12 , 15 mm length). - R2 (Taper 0.08 , 15 mm length). - R3 (Taper 0.06 , 19 mm length). - R4 (Taper 0.04 , 23 mm length). **For further product information, please contact Chat Support**