Tines of MD-Ring provide non-fluctuating placement with sufficient space for wedge. High-Quality Stainless Steel Clamp with Flat Tines to be used with Forceps. Ledges (shoulders) on MD-Ring with Ledges prevent getting the tongue into the operating area. WARNING!!! When operating with ring: 1) make sure of the integrity of the ring and absence of rust on it. 2) avoid high-speed opening; 3) open the ring for not more than 10 - 12 mm width. 4) open the ring for necessary width outside the mouth before placing it on a tooth. CLEANING AND STERILISATION INSTRUCTIONS Recommended to use Dry-heat sterilization process.