Gas Spring, Spring Locking, Material Steel, Force 30 lb, Rod Thread Size MF10, Locking Yes, Rod Dia. 0.39 in, Cylinder Dia. 0.87 in, Fitting Type Elbow 1-Side, Fitting Thread Size M64, Stroke 20.08 in, Extended Length 44.29 in, Compressed Length 24.21 in, Fixed Resistance Yes, Adjustable Resistance No