- Ortho-Cast 18. - Non-convertible, distal notch. - Teeth: 17-16/36-37. - Torque: 0°. - Distal Offset: 6°. - Width: 3.3 mm. - Slot 18: 0.46 x 0.64 mm / 18 x 25. **For further product information, please contact Chat Support**