This sta-tite toilet seat bolt kit allows you to upgrade your existing easy?clean & change seat. With the sta-tite seat fastening system, the toilet seat does not shift around and stays firmly attached to the toilet. These hinges will fit with any Mayfair, Bemis, church and Westport easy?clean & change toilet seats. It is proudly made in Sheboygan falls, Wisconsin, usa with environmentally friendly materials and processes.