Shock Absorber Adjustable Multiple-Varying Orifice Material Steel Force 15.4 lb Max Cycle Rate 30 per min Max Weight 5 953 lb Rod Thread Size M36x1.5 Locking No Rod Dia 12 mm Cylinder Dia 36 mm Stroke 50 mm Extended Length 254.5 mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob