-The sliding archwire stop locks can be slipped over the archwire and fixed in place. Also, can be loosened for adjustments. An excellent way to maintain anchorage, distalize molars and ever provide a stop or hook when necessary. -The sliding archwire locks can be slipped over the archwire and fixed in place by turning the nut tight with the Double Ended Wrench. The locks can be loosened and moved when desired. An excellent option to maintain anchorage, distalize molars and provide a stop or hook when necessary. **For further product information, please contact Chat Support**