Made in the USA Gas Prop for Truck Caps and Campers Set of Two Makes Replacements More Economical These SUSPA® Gas Props are high quality, US-made, and provide years of dependable use. Extended Length (Center-to-Center): 19.7in (500mm) Compressed Length (Center-to-Center): 11.8in (300mm) Force: 80 Lbs (356 N) (Per Prop) End Fittings: 10mm Nylon Ball Sockets Replacement of both units at the same time is recommended. Set of Two NOTE: Force 160lbs per Set