20" 110 lbs. Force per Prop and 220 lbs. per Pair Gas Prop Suspa C16-17796 (C16-17796) Compressed Length (Center-to-Center): 11.8in (300mm) Extended Length (Center-to-Center): 19.7in (500mm) Force: 110 Lbs (489 N) (Per Prop) End Fittings: 10mm Nylon Ball Sockets Set of Two