The GARDENA System Stop 'n' Spray Set includes a Water Stop (Art. No. 18214) and the GARDENA Cleaning Nozzle (Art. No. 18300). 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 19 mm (3/4") hoses.