Is your truck camper shell or cap getting hard to lift, or just not staying up anymore? It's probably time to replace the gas struts (also called shocks or props). This set gives you two brand new struts that are designed to fit many Snugtop, Leer, and similar camper shells. Here are the specs you need: each strut has an extended length of 18.5 inches (measured from the center of one ball socket end to the center of the other). When compressed, they're 11.25 inches long. They provide 45 pounds of lifting force per strut, which is the pressure needed to smoothly lift and hold up the heavy shell. The ends have 10mm ball sockets, which is a common attachment style. Installing these is usually a straightforward job – just pop the old ones off and click the new ones into place. Your shell will lift smoothly and stay securely open again, making access a breeze. Always good to replace both struts at the same time for even performance.