The Fluidmaster universal PerforMAX fill valve 2 and 3 in super flapper is the newest kit with the most technologically advanced universal toilet flapper and fill valve on the market. This two-piece kit is the excellent solution to fix noisy, running toilets. It takes all the guess work and uncertainty out of deciding what pieces or sizes of flappers to buy to fix your toilet. This kit includes our most powerful toilet fill valve PerforMAX and our newest toilet flapper that replaces either a 2 or 3 in flapper the super flapper. The PerforMAX fill valve sets the standard for performance and is quick and easy-to-install. It is the most powerful fill valve on the market with 2X greater bowl refill for a more powerful flush.