Features 1、Heavy Duty Hinge: Round box buckle heavy duty hinge, possess 4mm round plate thickness, and 58mm(2‑1/4in) semi circle diameter 2、Strong Corrosion Resistance And Durability: Made of marine grade 316 stainless steel, has strong corrosion resistance and durability in the marine environment 3、Prevent From Disengaging: The stopper can prevent the lock from disengaging when locking the position, very stable 4、Widely Used: Can be used for ships, access doors, fishing lure manhole covers, hatches, center console doors, fishing tackle units, and drawer units, electrical enclosures 5、With 4 Screws: The hinge is equipped with 4 screws, easy for you to install, simple to operate, useful and practical Specification Item Type: Boat Door Cabinet Hatch Material: Stainless steel 316 Uses: Can be used for ships, access doors, fishing lure manhole covers, hatches, center console doors, fishing tackle units, drawer units, and electrical enclosures Semicircle Diameter: 58mm (2-1/4in) Maximum Width After Installation: 60mm (2-3/8in) Round Plate Thickness: Approx. 4mm / 0.16in Positioning Hole Diameter: Approx. 4mm / 0.16in Package List 1 x Left Hinge 1 x Right Hinge 4 x Screw