The Fluidmaster 3 in. Toilet Flush Valve Repair Kit is a proven way to repair tank to bowl leaks, while saving water. Repair, replace and upgrade outdated valve designs and leaky toilet flappers with 1-complete flush valve repair kit, the flush valve overflow tube is easily adjustable to fit more tanks, while promoting efficient use. And the included 3 in. adjustable toilet flapper controls and optimizes water use per flush, this easy to install model fit's 3 in. toilet flush valve HET toilets (built 2005 and newer) and fit's most common models. Built for a long life, the flapper includes a chlorine resistant silic1 seal and the kit showcases corrosion resistant materials., the Fluidmaster K-540A-015 3 in. Toilet Flush Valve Repair Kit, comes with tool and everything needed to enhance your toilets flush, every time. Material: Plastic.