Shock Absorber, Fixed, Material Steel, Force 2.2 lb, Max. Cycle Rate 60 per min, Max. Weight 13 lb, Rod Thread Size M12x1.0, Locking No, Rod Dia. 3.5 mm, Cylinder Dia. 12 mm, Stroke 10 mm, Extended Length 63 mm, Fixed Resistance Yes, Adjustable Resistance No