Universal Design Fits 2-inch Plastic Flush Valves: Fits most standard 2 in. flush valves, compatible with most toilet brands with 2-inch toilet tank valve opening. Fix Hissing & Leaking Toilets: With this 2-in flapper replacement kit, quickly fix running and leaking toilets and eliminate costly water waste. Easy to Install: The flapper is super easy to install and works great. Take off the old one, replace with new one took about 1min. Do it by yourselves without calling the plumber which costs a lot. Made of Flexible Rubber for A Leak-free Seal: This stopper valve is made of soft material and it is sturdy and functional to make a great seal. High-Quality Replacement Flapper with Stainless-steel Chain: The flapper adjusts to match original toilet settings and eliminates water waste by decreasing the amount of water flushed.