Specifications: Application: Easy, quick operation and change of devices at the end of the hose. For 13 mm (1/2") - 15 mm (5/8") hoses The GARDENA Quick Stop Coupling can be connected to the hose end. When a connected device, e.g. a sprinkler or a sprinkler nozzle, is disconnected, the quick coupling with alloy automatically stops the water flow. When the appliance is plugged back in, the water flows freely again. This avoids annoying trips to the tap when changing devices. The Quick Release Alloy fits 13 mm (1/2") and 15 mm (5/8") hoses. POWER GRIP - specially formed nut ensures a perfect connection to the hose and trouble-free installation. The grooved handle made of soft plastic guarantees comfortable handling. **