Set of RV Marine Gas Spring/Prop/Strut/Shock 25" extended length x 16.26 " compressed length x 57 LB Pressure Extended Length: 25" (center to center of ball socket ends) Compressed Length: 16.26" Force: 57 pounds of pressure (Per Prop) End Fitting: 10mm 16 Degree Ball Socket and 10mm Ball Socket Set of Two