Shock Absorber, Adjustable, Material Steel, Force 26.9 lb, Max. Cycle Rate 20 per min, Max. Weight 7,496 lb, Rod Thread Size M42x1.5, Locking No, Rod Dia. 12 mm, Cylinder Dia. 42 mm, Stroke 25 mm, Extended Length 144 mm, Fixed Resistance No, Adjustable Resistance Yes, Includes Adjustment Knob