Shock Absorber Adjustable Multiple-Varying Orifice Material Steel Force 22.2 lb Max Cycle Rate 6 per min Max Weight 12 125 lb Rod Thread Size M42x1.5 Locking No Rod Dia 12 mm Cylinder Dia 42 mm Stroke 80 mm Extended Length 302.5 mm Compressed Length 129.5mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob