1Wide Application: Marine hatch lid stay support adjuster is mounted in skylights and portholes, and is suitable for boat, yachting and sailing. 2Highly Stable: Marine hatch lid support adjuster helps the owner to accurately control the opening angle of the hatch cover, ensuring stability and safety when the vessel is working underwater. 3Superior Material: The marine hatch lid support adjuster is made from high class stainless steel for excellent abrasion resistance for use in harsh marine environments. 4Retractable Design: The marine hatch lid support adjuster has a retractable design that automatically retracts and contracts according to the opening angle of the hatch cover, which is very convenient and practical. 5Easy to Operate: Boat hatch lid support adjuster is easy to operate and requires less manpower and time to complete adjustments, increasing crew efficiency.