This Flopro Supergrip Spray Gun Connector – Waterstop stops the flow of water from your hose without needing to turn off your tap. The Water Stop connector has an internal valve that stops the water flow when an accessory like a spray gun is disconnected. This saves having to return to the tap to turn the water off when switching between accessories. It also eliminates water wastage. The Flopro Supergrip Spray Gun Connector – Waterstop also allows a snap fit to all watering brands.