2 Inch Toilet Flapper: Our toilet flapper fits 2-inch toilet flush valve. Our toilet flapper is 4" x 3" in size and is specifically designed for use with a flush valve that has a 2-inch diameter opening. WIDE COMPATIBILITY: Specially designed to replace flappers of popular 2-inch flush valve toilets including, but not limited to American Standard, Kohler, TOTO, Mansfield, Gerber. Please measure the size of the replacement toilet flapper in advance. LONG-LASTING DURABILITY: Crafted from high-quality chlorine-resistant rubber, which is very corrosion-resistant, Our toilet flapper ensures long-term usage and withstands the effects of hard water. Effectively control flushing to conserve water over the long term. Easy to Install: Close the water valve leading to the toilet, drain the water from the tank, remove the old leaking flapper, install our new toilet flapper, and install the chain. Notication: If your old baffle is hard to take out, you can cut it, don't pull it open forcibly to avoid damaging the tap. Package Includes: 2* 2-inch Toilet Flapper. When you open the package will have an odor, placed after a period of time, the smell will be eliminated. 2 Pack Toilet Flapper Replacement kit, 2 Inch Universal Toilet Stopper Flapper Compatible with American Standard Toilet Tank with Stainless Chain, High Performance, Easy to Install-Blue