Suspa C16-23292 C1623292 17" Gas Prop, Quantity (2), Force is 38 Lbs per prop and Force per set is 76 Lbs,&nbsp; Suspa recommends to replace both struts at the same time, Camper Rear Window, Tonneau Cover Lift Supports, Window Lift Support, Struts Extended Length: 17.13" (435mm) (center to center of ball socket ends) Compressed Length: 10.8" (275 mm) Force: 38 LB of pressure (169 N) (Per Prop) End Fittings: 10mm nylon ball sockets Set of Two