Shock Absorber Fixed Material Resin Force 0.5 lb Max Cycle Rate 45 per min Max Weight 3.3 lb Rod Thread Size M12x1 Locking No Rod Dia 3 mm Cylinder Dia 12 mm Ball Diameter 6 mm Pin Dia 3mm Stroke 12 mm Extended Length 70 mm Compressed Length 58mm Fixed Resistance Yes Adjustable Resistance No