The ACE bath shoe gasket fits between the tub and the drain plug to prevent leaking. It is made with rubber for durability and is designed to fit a wide range of bath shoes and tub drains well.Rubber construction,Provides a positive seal to prevent leaks,2-15/16 in. O.D. x 1-7/8 in. I.D. x 3/8 in. thick,Fits between tub and drain plug,Easy to install,Includes 1 gasket