Features: Secure your campers water supply with this lockable water inlet featuring key security and a dustproof/weather resistant design, suitable for 1 1/4" to 1 1/2" hoses for universally campers applications. Built with UV stabilized ABS plastic and O rings seals, its 4.5" circular flush mount design integrates seamlessly into most B/C class campers while accelerating water flows by 30% through fed operations and air venting technology. Ideal for campers owners and camping enthusiasts seeking water replenishment during country trips or extended stays at campgrounds and service stations. Effortlessly refill your freshwater tanks at any location using standard garden hoses, with optional quick connection adapters ensuring stable filling operations on uneven terrain or crowded campers parks. Maintains structural integrity against road salt and UV exposure while requiring minimal upkeep – surfaces mount installation takes minutes using included hardware, and routine cleaning demands only a damp cloth wipe down. Specifications: Component: ABS Color: Black,White Size:Approx.12cm/4.72''x12cm/4.72''x11cm/4.33'' Package Includes: 1Set Water Filler Cap note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.