Gas is compressed inside a cylinder to create energy for gas-charged lift supports. Closed doors store the former. Energy is released to raise and hold open a hatch, hood, liftgate, or trunk when it is opened. Gas-charged lift supports, often known as shock absorbers or struts, absorb energy to control motion. Since they include a 1,500 psi gas charge, lift supports are frequently unable to be manually compressed. Key Features: The Nautalift Marine Grade Gas-Filled Supports have bronze bushings, engineered polymer rod ends, annealed steel rods that have been nitrile-coated for corrosion resistance, and a multi-lobe internal seal. By replacing damaged lift supports, you can ensure safety. It takes little time to install. Replaced by OEM: GSNI-5200-40 Exact replacement OEM part. Specifications: SKU: GS62740 UPC: 808282134358 Weight: 0.40 LBS OEM Number: GSNI-5200-40 Unit Of Measure: EA Rated (Lbs): 40 Compressed Length (Inches): 11 Extended Length (Inches): 17 Manufacturer Part Number (MPN): GS62740 Marine Grade Gas Filled Supports Annealed steel rods, nitride coated for corrosion resistance Engineered polymer rod ends Bronze bushings Multi-lobe internal seal Exact fit OEM replacement