Assorted rubber cone washer kit includes sizes 5/8" OD x 3/8" ID, 5/8" OD x 7/16" ID, 5/8" OD x 1/2" ID, 3/4" OD x 3/8" ID, 3/4" OD x 1/2" ID, 3/4"OD x 7/16" ID, 7/8" OD x 7/16" ID. Used for connecting old style metal supply tubes. Rubber cone washer and friction rings. Connects metal flex to faucet or toilet. Use with brass friction ring.