Genuine TOTO 3 in. flapper by Korky is fully adjustable to fit all 3 in. TOTO toilet models. It is made with the longest lasting material on the market. The adjustable flapper has 8 settings to ensure it fits all TOTO models. Made of flexible rubber for a tight seal and easy to install. Includes: 1 adjustable 3 in. flapper and 1 stainless steel chain.