This set allows for easy connection of a 13mm hose to the tap. This contains all the necessary parts to get set up quickly and even has a Bubble-Jet Threaded Adapter which gives a soft, airy water jet. This adapter will also allow connection to a household tap with a 22mm screw in tap sprinkler. The sprinkler unit is replaced with the Gardena Bubble Jet adapter to give a standard 3/4" tap thread. The set connectors are compatible with other quick-release connectors from other high quality watering systems so will easily connect with your existing components.