Features:Heavy duty 316 grade stainless steel construction for enhancing its strength and durability. Surface with mirror polishing finish, strong corrosion resistance in the saltwater environment. Complete with stainless steel retaining chain to avoid the loss or misplacing of the cap. Built-in O-ring gasket on the cap, good sealing performance. Widely used in boats, yachts, marine, caravans, trailer fuel tank, etc. Specifications:Condition: 100% Brand NewMaterial: 316 Stainless SteelColor: SilverLength: 76mm (3in) / 72mm (2.8in)Rim diameter: 75mm (3in) / 90mm (3.5in) Fuel Hose Diameter: 38mm (1.5in) / 50mm (2in) (optional)Package Weight: approx.347g / 574gPackage List:1 * Marine Deck Filler Keyless Cap / 1 * Marine Deck Filler Cap (key is included)