Fluidmaster, 3", adjustable flush valve kit quickly repairs leaks, while saving water in 1 easy to install design, height adjusts up or down to fit most toilet models & sizes, flapper also adjusts to optimize performance & fine tune water use, includes everything needed to restore your toilets flush, parts include adjustable flush valve, 3" flapper, gasket, bolts, washers & nuts for a complete repair, fits most common 3" flush valves for durably & long lasting performance.