Feature:1. Dimensions: Spring hinge coil length 81/4in, spring stock diameter 7/16in, supports lids up to 10 lb. Fitted with hatch opening spring, includes fork Ubolt support plate.2. Professional Design: Retaining cable to prevent overopening. Snaps straight to hold lid open and deflects to close.3. Durable Construction: Made of high strength marine grade 304 stainless steel for maximum rust resistance and durability.4. Wide Application: Versatile usage on bait well, fore hatch, hatch, door and window as holder and support.5. Easy Installation: Easy to install, no complicated tools required, convenient to use, save time and effort, and can be used for a long time.Specification:Item Type: Hatch AdjusterMaterial: 304 Stainless steelSpring Hinge Coil Length: Approx. 8-1/4inSpring Stock Diameter: Approx. 7/16inApplication: Suitable for all the triangular fixed ends of all kinds of cabinet doors indoors and outdoors.Not recommended for applications where the hatch will be windy and the spring will overextend when the ship is sailing..Package List:1 x Hatch Adjuster