Features: 1.Waterproof Plate: The waterproof inspection deck plate can be used all the year around, and keep deck safety without loss of durability. 2.High Quality Materials: The deck plate is manufactured by 316 marine grade stainless steel, excellent resistance to impact for long lifespan. 3.High Performance: The boat deck cover could retain an attractive, clean finish with low maintenance for the discriminating yachtsman. 4.Exquisite Appearance: The heavy duty lid is anti slip with mirror polished surface and strong design access, bring you more convenience. 5.Easy to Install: The high grade inspection hatch comes with pre?drilled countersunk holes (screws not included) for convenient installation. Specification: Item Type: Deck Plate_x000D_ Material: 316 Stainless Steel _x000D_ Surface Treatment: Mirror Polishing_x000D_ Outer Diameter: Approx. 197mm/7.8in_x000D_ Inner Diameter: Approx. 157mm/6in_x000D_ Outer Hole Center Distance: Approx. 92mm/3.6in_x000D_ Inner Hole Center Distance: Approx. 126mm/5.0in_x000D_ Aperture: Approx. 5.5mm/0.2in PackageList: 1 x_x000D_ _x000D_ Deck Plate