Stops the water flow when disconnecting. Power Grip - specially shaped nut for high hose retention strength and easy installation. Grooved grip areas made of soft plastic ensure comfortable handling and easy switching of connection devices. The Gardena water stop is connected to the hose outlet. When a connection device, such as a spray nozzle or watering device, is removed, the water is automatically stopped. Once a device is reconnected, the water can flow freely again. To protect against damage, the water stop is equipped with an elastic ring.