Specification: Diameter: 114MM Length: 99MM Hose Spigot: 40MM Colour: Black Product Code: SFZZIELWCB Fresh Water Inlet Our Water Inlet Cap is designed to attach onto your caravan, motorhome or RV to provide a lockable opening for your fresh water supply. It's always best to have a well sealed locking cap to avoid the possibility of contamination to your water. Our handy Water Cap is lockable and supplied with 2 keys. This product is ideal for if you've lost or damaged your water cap. Ours allows for a fast fill due to the 0.5 inch air vent and has 3 holes to allow for screws for a secure fit.