1、Adopts new environmental conservation PP plastic, which has good toughness. 2、The design of the sealing ring prevents leakage, dust and water leakage. The gravity inlet with cap lock is suitable for most freshwater inlets on RVs, station wagons and boats. 3、Gravity water inlet features a bayonet style cap, 10mm air vent for faster fill rateand a 40mm barn connection. 4、Lockable, coms with 2 pieces keys, ensure using water safely. 5、Spring and sealed ring design, leak proof and anti loosening. Features: Adopts new environmental conservation PP plastic, which has good toughness. The design of the sealing ring prevents leakage, dust and water leakage. The gravity inlet with cap lock is suitable for most freshwater inlets on RVs, station wagons and boats. Gravity water inlet features a bayonet style cap, 10mm air vent for faster fill rateand  a 40mm barn connection. Lockable, coms with 2 pieces keys, ensure using water safely. Spring and sealed ring design, leak proof and anti loosening. Specifications: Material:PP Opening size: 80mm Inner diameter of external water pipe: 38mm Suitable for RV Camper Trailer Cars Weight:195g Box size:19.1cmx12cmx12CM Package List: 1x Water Inlet 2x Keys 4 x Screws 1x Water Inlet 2x Keys 4 x Screws