Features: 1.Convenient keyless design, just lift built?in tab on cap and turn to open or close. 2.Complete with stainless steel retaining chain, to avoid losing or misplacing of cap. 3.Strong corrosion resistance, durable in saltwater circumstance, does not rust. 4.316 stainless steel hardware with wide application, suitable for boats, yachts, caravan. 5.Lost wax process and cover surface polished for mirror reflection, strong and sturdy. Small and light in weight, easy to install. Specification: Conditon: 100% Brand New_x000D_ Item Type: Deck Filler_x000D_ Material: AISI 316 Stainless Steel_x000D_ Color: As Pictures Shown_x000D_ Optional Size: Approx. O.D. 38mm/ 1?1/2in, O.D. 50mm/2in_x000D_ O.D: Approx. 1?1/2in (38mm)_x000D_ _x000D_ Height: Approx. 84mm/3.31in_x000D_ _x000D_ Fastener Diameter: Approx. 6mm/0.2in_x000D_ Screw Off Top Plate. Approx. 74mm/2.91inch Dia, with pull out lug ( for screwing off with ease),safety chain._x000D_ O.D: aPPROX. 2in (50mm)_x000D_ _x000D_ Height: Approx. 81mm/3.19in_x000D_ _x000D_ Fastener Diameter: Approx. 6mm/0.2in_x000D_ _x000D_ Screw Off Top Plate. Approx. 80mm/3.15inch Dia, with pull out lug ( for screwing off with ease),safety chain.