Hatch adjuster made of high quality stainless steel, fine workmanship, reasonable structure Suitable for both indoor and outdoor all Cabinet doors hatch door triangle accessory extreme, strong and durable Holds lids up to 20 lbs The hatch spring has an internal cable that prevents the spring from over-extending during normal use Equipped with hatch opening spring, includes U-bolt fork and L-shaped plate The tool is an assistant for marine yachts and boats that operate efficiently and safely. Not recommended for applications where wind eclopes while is in progress and extends over the dock Material:stainless steel colour:Silver Package Contents: 1 * Boat Spring