The Dual-Flo Multi-Function Hose nozzle contains a patented internal valve that allows you to choose either high-pressure spray or a free-flowing stream of water without removing the nozzle from the hose. You can adjust the flow from a gentle trickle for watering container plants up to a raging torrent for filling buckets. The nozzles are threaded, allowing you to attach implements directly to the nozzle. Now you can have full control of the water flow without walking back to the faucet.