Replacement O-rings to help repair leaky faucets. Replacing the seals on the faucet stem will create a better seal and help prevent water leaks. Faucets usually have one or more O-rings that prevent water from leaking out around the spout. Replacing O-rings is an inexpensive alternative to replacing the entire faucet. Save water and energy by stopping the leak. Kit contains 200 of the most commonly used O-rings. Includes: 1-1/8-inch, 1-1/16-inch, 15/16-inch, 7/8-inch, 13/16-inch, 3/4-inch, 11/16-inch, 5/8-inch, 9/16-inch, 1/2-inch, 7/16-inch, and 3/8-inch outside diameter O-rings.