Fresh Caravan Water Filler Locking Inlet Hatch Tank Caps For RV Motorhome CampeR Features: * The design of spring and sealing ring can effectively prevent leakage and loosening. * Lockable design with 2 keys to ensure water safety. * Made of high quality plastic material, sturdy and durable. Specification: Products: Filler Caps material: PP Colour: Black Model: 40mm Application: Suitable for RV door panels with a thickness of 30-40mm/1.18 - 1.57in Packing list: 1 water filler cap 2 keys 3 screws 1 sealing gasket