1. Adaptability: This toilet flush valve is designed to fit TO TO 3-inch one-piece toilet tanks. Please note it is not compatible with two-piece toilets. Verify your toilet model and specifications before purchasing. 2. Durable Material: Constructed from high-quality plastic, this flush valve resists water corrosion and warping, ensuring reliable and long-lasting performance. 3. Problem Resolution: Addresses common issues such as unusual noises, slow refilling, unstable water levels, poor flushing, or leaks. Replacing a worn flush valve can restore proper toilet function. 4. Easy Installation: Designed for TO TO 3-inch flush hole one-piece toilets, this valve is simple to install and maintain. Replace the old unit with this new valve to quickly restore your toilet’s performance.