Made with advanced techniques by Swiss machinery. Swiss CNC-machine ensures the accuracy of the bracket slot within 0.02+mm. Laser welding from all sides to enhance the welding strength and avoid the problem of loose welding and welding material residues, in comparison to traditional welding way. New polishing technique results in minimizing surface roughness, and maximum patient comfort. - MBT. - Slot: 0.022. - Type: Upper & Lower with Hook on 3. **For further product information, please contact Chat Support**