Alpha endo pro gold: Heat-treated NiTi files. More cutting. Better flexibility. - Length: 25 mm Pack contains: - 1 x 17-8%. - 1 x 18-5%. - 1 x 25-6%. - 1 x 16-2%. - 1 x 25-4%. - 1 x 35-4%. **For further product information, please contact Chat Support**