Features: - Dental instruments endodontic reciprocating endo rotary files single files. - Operation type: Engine use. - Made of M-wire NiTi alloy, excellent fracture resistance. - One files system, reciprocating motion. - S-shaped cross-section allows better cutting performance. - Make root canal treatment more efficient and time-saving. - Recommended rotary speed of engine files is 250~400RPM. Specifications: - Size: #20 taper 8%, #25 taper 8%, #40 taper 6%. - Length: 25 mm. - Color: Gold. Contains: - 2 x #20 taper 8%. - 2 x #25 taper 8%. - 2 x #40 taper 6%. **For further product information, please contact Chat Support**