ZB0603-38 (General model) Mirror Polished 316 stainless steel Marine Boat Yacht Caravan Water Tank Deck Fuel Filler Keyless Description: *ã??Fitmentã??Suitable for 50mm/2 inches 38mm/1.5 inches diameter Gas hose, and cap contains a high grade O-ring seal.Fits for Boats, yachts, caravans, RV, trucks, tractors and trailer fuel tanks etc. *ã??Easy to Installã??Humanization design, complete with stainless steel retaining chain, to avoid losing or misplacing cap.Great design sturdy and easy to install.contain Key Cap *ã??Made of High Quality Materialã??Made with high quality stainless steel for maximum durability. *ã??Durableã??Anti-corrosion, anti-rust and wear resistant.Excellent seawater corrosion resistance and high oxidation resistance. * Lost wax process and surface polished