SUSPA Spring Strut Prop Shock C16-09461 One Pair 40# 14", Force is 40 Lbs per prop and Force per set is 80 Lbs Compressed Length (Center-to-Center): 8.5in (216mm) Extended Length (Center-to-Center): 13.9in (355mm) Force: 40 Lbs (178 N) End Fittings: 10mm Nylon Ball Sockets Set of Two