Shock Absorber Adjustable Multiple Orifice Material Steel Force 6.1 lb Max Cycle Rate 60 per min Max Weight 661 lb Rod Thread Size M27x1.5 Locking No Rod Dia 8 mm Cylinder Dia 27 mm Stroke 25 mm Extended Length 156 mm Fixed Resistance No Adjustable Resistance Yes Damper Type 156 mm Includes Adjustment Knob