Dampers, Extension Only, Material Steel, Max. Weight 674 lb, Locking No, Rod Dia. 0.39 in, Cylinder Dia. 1.1 in, Fitting Type Elbow, Fitting Thread Size M8, Ball Diameter 0.51 in, Stroke 7.87 in, Extended Length 20.47 in, Compressed Length 12.6 in, Fixed Resistance No, Adjustable Resistance Yes, Damper Type Extension Only