Autoloc LAD8 0-8" Adjustable Linear Actuator with Rod Bearing Ball bearing rod and heavy duty motor with built in potentiometer Features a screw drive assembly and lifts up to 200 pounds with 0 to 8 inch travel 10:1 gear ratio for quick operation Built-in clutch with high torque electric motor; permanently sealed and lubricated Great for hoods, trunks, tonneau covers and more