Suspa C16-06874 Gas Spring Shock Strut Prop for Truck Shell Cap Topper Window 17 Inch - 40 Pounds Extended Length: 17.1 in (435mm) Compressed Length: 10.8" (275mm) 40 lbs (178 N) 10 mm Ball Sockets on both ends Set of Two Struts 10 mm Ball Sockets on both ends