Cartridge Removal Wrench, Material of Construction Plastic, Color/Finish Black, Fits Flushmate Cartridge, Manufacturers Warranty Length 1 Year RestrictionsNote: Flushmate system is not sold as a retrofit component for a gravity-fed toilet. Flushmate SystemPressurized flush eliminates double flush and clogs and saves water. Fewer moving parts extends service life. 1ATR2 is designed to replace any previous generation of Flushmate series, including 500, 501, 501-A, and 501-B (except American Standard fixtures). 2VRN8 is designed to replace series 500, 501, 501A, and 501B in American Standard tank number 4086. Include tank-to-bowl gasket. Flush cartridge, upper supply, and lower supply are replacement parts for all Flushmate systems.