The Gardena System Stop n Spray Set includes a Water Stop and the Gardena Cleaning Nozzle. Thanks to the Water Stop at the end of hose, water is stopped automatically at disconnection, at connection it flows again. This saves a trip to the tap e.g. when nozzles need to be changed. The Water Stop is suitable for 13 mm (1/2 inch) and 15 mm (5/8 inch) hoses.