The Waste and Overflow Gasket fits between a tub and overflow drainand provides a positive seal to help prevent leaks. This rubber gasket offers compatibility with most waste and overflow connections.Sponge-rubber black construction provides durability,3-3/16 in. O.D. x 2-1/8 in. I.D.,Provides a positive seal to help prevent leaks,Fits between a tub and overflowdrain,Compatible with most waste and overflow connections