HABA 1 x Portland Water Cap with Push Fit Connection for a Water Hose. Used as a replacement Onboard Water Tank Replacement Cap to enable easy refill of the water tanks. Fits smaller water inlets Cap diameter 6.6cm. Please check shape of the cap. Suitable for the following brands Arca, Chausson, Caravalair, Challenger, Silver, Sterkman, Benimar, Autostar, Vendome, Sublim, Fleurette, Dethleffs, LMC, TEC, Soifer and Polar.