Description: Stainless steel material: Boat Deck Filler Cap For water is made of stainless steel, which is wear resistant and Sturdy, suitable for long term use. 9cm in length and compact in design. Suitable for hoses with a diameter of 50 mmSealing design: Deck Filler Cap contains O Circle seals to prevent leakage and make it more reliable to useMulti scenario application: Deck Filler Cap is suitable for ships, yachts, caravans, RVs, trucks, tractors, and trailers and other scenariosFixed chain design: Boat Deck Filler Cap is equipped with a stainless steel fixed chain to avoid losing or misplacing the cap, making it more convenient to useEasy to install: Keyless Deck Filler Cap is designed to be easy to install, allowing users to quickly complete the installation process Specification: Material: Stainless Steel Size Chart: Total length 9cm/3.54inch,For 50mm/1.97inch hose Package Includes: 1 Boat Deck Filler Cap Note: Conversion: 1inch=2.54cm, 1cm=0.393inchPlease allow slightly 0-1cm difference due to manual measurement.Colors can appear different depending on light and how the listing is viewed.Thanks for your understanding and attention. Wish you a pleasant shopping experience!