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. Item Type: Deck Plate Material: 316 Stainless Steel Surface Treatment: Mirror Polishing Outer Diameter: Approx. 197mm/7.8in Inner Diameter: Approx. 157mm/6in Outer Hole Center Distance: Approx. 92mm/3.6in Inner Hole Center Distance: Approx. 126mm/5.0in Aperture: Approx. 5.5mm/0.2in 1 x Deck Plate