The Fluidmaster® 500 universal 2 in toilet flapper features a solid frame design, to resist bending or twisting and secure the best seal with every flush. Eliminate having to jiggle the toilet handle with this universal design that fits most 2 in flush valve toilets. Includes a 1 year warranty and built-in Microban® technology. Only Fluidmaster® has toilet flappers with built-in Microban® protection. Not just simply a coating, Microban® is specifically built into the construction of our flappers to fight flapper breakdown and combat bacteria.