Fluidmaster k-507a-008 universal 2 in. adjustable flush valve repair kit includes everything needed to restore your toilets flush. quickly eliminate leaks at a common leak point, between the tank and bowl. this helpful toilet repair kit offers the simplest repair experience possible, showcasing step-by-step instructions and durable install/uninstall tools to eliminate searching for toilet repair tools. this universal design is built to work with most 2 in. flush valve toilets. the flush valve features an adjustable overflow tube, simply twist to adjust height for any toilet tank. stop water waste and control your water use per flush with the solid frame performax adjustable flapper. this kit also includes the innovative universal tank-to-bowl gasket system that fits any 2 in. flush valve. use the red gasket for standard designs, the black triangle gasket for kohler models and combine to fit gerber models.