[ENHANCED FLUSHING PERFORMANCE]: Improve your flushing system with WINONLY highly efficient toilet flapper, designed to prevent ghost flushing and running toilets for seamless operation. Equipped with a rust-proof stainless steel chain that promises long-lasting durability and prevents breakages or snags. Toilet Flapper is ideal for a homeowner, tenant, professional plumber, repairman, landlord, or commercial property manager [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. [EFFORTLESS INSTALLATION]: No special tools are required, simple DIY installation in just a couple of minutes! Step 1: Shut off your toilet's water supply. Step 2: Flush multiple times to empty the toilet tank. Step 3: Remove the old flapper from the lever rod and overflow pipe. Step 4: Position the new toilet flapper replacement. Step 5: Attach the flapper chain to the lever rod, adjusting for a tight fit and effective seal. Step 6: Turn on the water, then test the new flapper for leaks [LONG-LASTING DURABILITY]: Crafted from high-quality chlorine-resistant rubber, which is very corrosion-resistant, WINONLY toilet flapper ensures long-term usage and withstands the effects of hard water. Effectively control flushing to conserve water over the long term, reducing bills while maintaining environmental consciousnesswelcomed!