The Fluidmaster 555CRP8 PerforMAX Flush Valve Repair Kit offers the quickest and easiest way to stop leaks from your flush valve, with its no tank removal "peel and stick" process. Simply peel the protective paper off the sealant ring and stick right on top of your existing 2" flush valve seat, and you're done. With a universal fit for most toilet models. The included PerforMAX 2" Adjustable Flapper, has an adjustable dial for a customized flush and water-savings. Just set depending on your needs. Other features include a solid frame flapper design to ensure a secure seal and eliminate twisting, and built-in Microban technology to fight bacteria on the flapper itself. Quickly repair leaks, and eliminate the install hassle while upgrading your flapper with the PerforMAX Flush Valve Repair Kit. Replaces model No. 555A Flusher Fixer Repair.