31" 80 Lbs. Gas Prop Suspa C16-18001 (Set of Two) (31" 80 Lbs. Per Strut and 160 Lbs. Per Pair C16-18001) Extended Length: 30.6" (center to center of ball socket ends) Compressed Length: 16.9" Force: 80 pounds of pressure (Per Prop) End Fittings: 10mm nylon ball sockets