Best-In-Class: The American Standard Vormax toilet valve assembly provides optimal performance ideal for vormax toilets Durability: Built to last, this toilet valve assembly by American Standard features a secure metal toilet chain and high performance flappers and teeter bar; American Standard toilet parts provide durability for bathrooms for years to come Flawless Design: Built to last, this toilet valve assembly by American Standard features a complete flush valve w/flappers, teeter bar, and tank to bowl coupling kit Performance: The American Standard Vormax toilet valve assembly is essential for Vormax toilets featuring flushing technology that cleans two times better than conventional toilets Includes: American Standard Vormax toilet valve assembly includes dual flappers with silicone seals and teeter bar