If your RV or camper cargo door is sagging or won't stay open, these gas struts (also called gas springs or shocks) are likely the fix. This is a pair (2 struts) designed to replace worn-out ones. They have an extended length of 15 inches (measured center to center of the ball socket ends) and compress down to 9.75 inches. Each strut provides 80 pounds of force, so together they give plenty of lift to hold a heavy door open. The ends are 10mm ball sockets, a common fitting for many RVs (including some Winnebago models). Before ordering, check the specs on your old struts – the length and force need to match. Installation is usually simple: just pop the old ones off and snap the new ones into place. These are heavy-duty and should restore that smooth, easy operation to your cargo door. Keep your hands safe from falling doors!