Shock Absorber Adjustable Multiple-orifice Material Steel Force 1.3 lb Max Cycle Rate 60 per min Max Weight 5.5 lb Rod Thread Size M10x1 Locking No Rod Dia 2.4 mm Cylinder Dia 10 mm Ball Diameter 6 mm Pin Dia 2.4 mm Stroke 8 mm Extended Length 65.2 mm Compressed Length 57.2mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob