ToothTorqueDistal OffsetHookConvertible Unit REF Ortho17-16 / 36-37 6°non-convertible 10 pieces 725-033-50 Ortho26-27 / 47-46 6°non-convertible 10 pieces 725-034-50 Ortho17-16 / 26-27 / 47-46 / 36-37 0° non-convertible 10 pieces 725-203-51