Danco 80857 Tank to Bowl Spud Gasket, for Use with Kohler, Alamo and Well Worth Toilets, 4-3/16 X 2-3/8 X 3/4 in, Rubber, Black Durable construction 4-3/16 in. X 2-3/8 in. X 3/4 in Prevents leaks between the tank and the bowl Provides a positive seal Complete kit for Alamo & well worth