Wide range of applications: The faucet installer is suitable for water supply nuts, shut-off valves, filter baskets, water supply pipe nuts and faucet nuts. Open slots allow easy access to existing supply lines. How to use: Easily turn hard-to-reach mounting nuts on faucets, sprayers, and ball valves, turn quickly, and replace nuts installed from faucets. Versatile: The multi-function wrench tool replaces ordinary wrenches, can be easily installed in tight areas, and can be easily operated through existing supply lines. It is suitable for the groove design of water pipes, which can be easily operated in a small space, and can easily solve the nut installation problem of faucets, showers and ball valves, saving labor and improving efficiency.