SUSPA Spring Strut Prop Shock C16-15208 One Pair 45# 15.75" Force is 45lbs for One Prop and 90lbs per Pair Compressed Length (Center-to-Center): 9.4in (239mm) Extended Length (Center-to-Center): 15.7in (399mm) Force: 45 Lbs (200 N) (Per Prop) End Fittings: 10mm Nylon Ball Sockets Set of Two