Quick connect & durable, premium Hozelock Pro Metal Aqua Stop Fitting for 12.5mm (1/2") hose, is best used at the GUN end of a hosepipe.
All internal parts are made from ultra tough engineering plastics for a long leak free life.
The Aqua Stop connector incorporates an internal valve that stops the water flow when an accessory (eg a spraygun ) is disconnected. This saves you having to go back to the tap to turn the water off when you are switching between accessories. It also helps you save water in the garden because it stops the water flow so less water is wasted.