Dampers, Both Directions, Material Steel, Max. Weight 674, 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 11.81 In., Extended Length 28.35 In., Compressed Length 16.54 In., Fixed Resistance No, Adjustable Resistance Yes, Damper Type Both Directions