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. 3 Inch Toilet Flapper: Our toilet flapper fits 3-inch toilet flush valve. Our toilet flapper is specifically designed for use with a flush valve that has a 3-inch diameter opening. LONG-LASTING DURABILITY: Crafted from high-quality chlorine- plastic, which is very -, Our toilet flapper ensures long-term usage and withstands the effects of hard water. Effectively control flushing to conserve water over the long term When you open the package have an odor, placed after a period of time, the smell be eliminated.