Description: [With Locking Keys]:Lockable,with 2 keys to ensure water safe,and prevent others from opening the filling port. [Premium and Reliable]:Gravity Feed Water Fill Hatch Inlet is made of ABS material,which is strong,toughness,and not easy to crack. [Waterproof Groove]:The hatch is deepened with waterproof grooves for quick drainage,preventing rainwater or car wash water from easily flowing into the water filling position. [Easy Installation]:Comes with Mounting Screws,Easy to install. [Application]:RV Water Locking Cap with Inlet Gravity Water Filling Hatch is suitable for RV,Trucks,Trailer,Caravans,and Cars. Specifications: Material:ABS 16.6cmx15cmx9.4cm/6.54inch x 5.91inch x 3.70inch Size: Opening size: 10.6cmx12.1cm/4.17inch x 4.76inch Water adding diameter:2.5cm/0.98inch Screw hole distance:8cmx8.4cm/3.15inch x 3.31inch Protruding body:1.1cm/0.43inch Note: 1.Please allow slightly error due to manual measurement. 2.Due to the difference between different monitors,the picture may not reflect the actual color of the item. 3.Wish you a wonderful online shopping! Package included: 1 Gravity Water Inlet Hatch With 2 Keys and Mounting Screws