The Navyclic Clic & Fill S drinking water tank filler neck is a practical combination of tank filler neck with hose connection and tank spanner. The star-shaped tank spanner is used to open the tank cap, then the Clic & Fill is screwed into place of the cap and the water hose is connected directly. 2 recesses are used to guide the chain of the fuel filler cap. Clic & Fill prevents soiling of the tank and the hose can also remain firmly connected in the harbour.