Connection at the end of the hose. GARDENA Stop Quick Coupling is connected to the tire outlet. When a connection device is disconnected, e.g. a nozzle or a sprayer automatically stops the water. When you connect a device, the water flows freely again. This saves you the time you need to go to the faucet when changing parts. The Stop Quick connector is suitable for 19 mm (3/4 ") tires. POWER GRIP: Specially designed sleeve for very good fit and easy assembly. Thanks to the soft plastic ribbed handle, the GARDENA Quick connector fits well and safely in the hand. rubber ring offers extra protection.