Set of RV Marine Gas Spring/Prop/Strut/Shock 15" extended length x 9.75 " compressed length x 60 LB Pressure Extended Length: 15" (center to center of ball socket ends) Compressed Length: 9.75" Force: 60 pounds of pressure (Per Prop) End Fitting: 10mm 16 Degree Ball Socket and 10mm Ball Socket Set of Two