Need to replace worn-out lid supports on your tool box, RV compartment, or other heavy lids? These gas prop lift struts are built to handle the job. They're a set of two, each with a force of 100 pounds of pressure to lift and hold your lid securely open. The extended length (center to center of the ball socket ends) is 26.375 inches, and the compressed length is 14.375 inches. The ends have 10mm ball sockets that attach to standard mounting points. Just make sure your old struts have similar measurements and force before ordering. Installation is usually straightforward—compress the strut, line up the ball sockets, and snap them into place. They help prevent lids from slamming shut and make accessing your tools or storage a breeze. Perfect for truck tool boxes, RV exterior compartments, utility boxes, or any other application needing reliable lid support. Heavy-duty construction means they'll last through plenty of open-and-close cycles.