The Flopro Double Outside Tap Connectors can be used for joining two hoses to a single outside tap. You can use one or both hoses and water flow can be individually adjusted. Controllers can be screwed directly underneath the tap, this is ideal for use with automatic watering systems. Made from UV resistant, premium grade plastic. Allows a snap-fit to all major watering brands, which means you can use it with the equipment you already have at home. Specification: Diameter: 21mm 1/2in BSP (G1/2), 26.5mm 3/4in BSP (G3/4), 33.3mm 1in BSP (G1).