Shock Absorber Adjustable Multiple-Varying Orifice Material Steel Force 1.3 lb Max Cycle Rate 60 per min Max Weight 22 lb Rod Thread Size M10x1 Locking No Rod Dia 2.4 mm Cylinder Dia 10 mm Stroke 8 mm Extended Length 58.9 mm Fixed Resistance No Adjustable Resistance Yes Includes Adjustment Knob