https://www.fluidmaster.com/shop/product/523a-009-t4-universal-2-3-super-flapper/ The Super Flapper from Fluidmaster, the #1 toilet parts company in the world, is the go to choice, taking the guessing out of what size flapper is needed in the tank. When you don't know what size flapper you need this universal flapper fits both 2 in. and 3 in. toilet flush valves. This can be converted into a 2 in. toilet flapper or a 3 in. toilet flapper with just a few simple adjustments. This is the ONLY flapper that can replace a 2" or 3" flapper. * Eliminate the size guesswork with this innovative universal flapper * Universal fit for most toilets * Easy to install * Fits both 2 in. and 3 in. flush valves * Eliminate leaky flappers and running toilets * Replaces small 2 in. flappers * Replaces large 3 in. flappers * Adjustable to set water use per flush and save water * 10-year warranty #fluidmaster #toiletrepair