Korky Combo Pack - (1) Korky 528MP MaxPerformance Fill Valve and (1) Korky 50BP Classic Flapper The most universal replacement fill valve Designed for optimum performance in TOTO, Kohler and American Standard toilets Larger ball design to stay open longer and ensure a tight seal on 5 and 7 gallon toilets Fits older style brass flush valves Get Both Parts - Great Value Pack