You use the Gardena hose connectors to ensure that the connection between the hose parts remains waterproof and to use the different garden watering products from Gardena. For example, you need a hose connector to connect a spray gun or sprayer to your Gardena garden hose. There are also Gardena hose connectors with multiple connectors, so you can provide several hoses with water. There are many different types of connectors, so make sure you choose a Gardena hose connector that fits.