Shock Absorber Adjustable Single-orifice Material Steel Force 3.3 lb Max Cycle Rate 60 per min Max Weight 110 lb Rod Thread Size M16x1.5 Locking No Rod Dia 5 mm Cylinder Dia 16 mm Ball Diameter 13.5 mm Pin Dia 6 mm Stroke 12 mm Extended Length 117 mm Compressed Length 105mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob