The Endo-Bite is a special film and phosphor plate holder for diagnostic X-rays of root canal instruments during endodontic treatment, checks on root fillings, as well as inserted pins and screws, and for general use when the bite is blocked (e.g. rubber dam clamps). Includes: 2 Endo-Bite Anterior with Ring, 2 Endo-Bite Posterior with Ring, 2 Centring Devices.