A PAIR(2) RV Winnebago Gas Strut shock cargo door prop 19.7" extended length x 11.8 " compressed length x 80 LB Pressure Extended Length: 19.7" (center to center of ball socket ends) Compressed Length: 11.8" Force: 80 pounds of pressure (Per Prop) End Fitting: 10mm Ball Socket and 10mm Ball Socket Set of Two