Turn the connector only when the hose distributor is connected to the faucet. No tools required. Independent valve function: The independent on / off valve allows you to close the water source anywhere instead of going to the remote faucet every time. With the 4-way selector, you can place four connections on one faucet. Precise adjustment: The watering width and range are continuously adjustable. The sprinklers are therefore suitable for small and large gardens. Water flow adjustment allows precise and continuous adjustment of the watering range. It is widely used in your home and garden life, such as extending plumbing, repairing leaky faucets, controlling water flow, etc.