Shock Absorber Adjustable Single-orifice Material Steel Force 2.2 lb Max Cycle Rate 45 per min Max Weight 33 lb Rod Thread Size M8x0.75 Locking No Rod Dia 2.5 mm Cylinder Dia 8 mm Ball Diameter 6 mm Pin Dia 2.5 mm Stroke 6 mm Extended Length 58 mm Compressed Length 52mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob