Features: 1.Can support a lid up to 20lb, an essential accessory for marine yachts and ships. 2.Suitable for all the triangular fixed ends of all kinds of cabinet doors indoors and outdoors. 3.There is an internal wire to prevent the spring from overstretching during normal use. 4.Made of high?quality stainless steel, fine workmanship, sturdy, durable and corrosion?resistant. 5.Equipped with hatch opening springs, including fork U-shaped bolts and L-shaped plates. Specification: Item Type: Hatch Spring Material: Stainless Steel Application: For all the triangular fixed ends of all kinds of cabinet doors indoors and outdoors. For marine yachts and ships. PackageList: 1 x Hatch Spring Note: Not recommended for applications where hatch will scoop wind while boat is underway and overextend spring.