Is your RV compartment lid, hatch, or boat storage door not staying up like it used to? This pair of gas springs (also called struts, props, or shocks) might be just what you need. Each strut provides 45 pounds of lifting force, with an extended length of 18 inches (center to center of the ball sockets) and a compressed length of 10.75 inches. The 10mm ball socket ends make installation straightforward on many RV, marine, camper, or trailer applications. Use them to replace worn-out struts on storage compartments, engine hatches, truck caps, or even some furniture lids. They help hold things open safely and reliably, so you don’t have to wrestle with a falling door. This is a set of two, so you can replace both sides for balanced support. Durable construction built for outdoor and marine environments. Get your access doors working smoothly again – no more headaches, just easy lifting!