Arm-mounted lights swing easily into place to allow illumination of dock area where you need it most. Lights adjust 300° horizontally for precise positioning. Rugged steel construction with twin struts. 1 1/2" sq. tubing. Lighthead is 8 1/8" dia. Use incandescent lamps only: Par-38 up to 150W or R40 up to 300W (lamps not incl.). 120V with toggle switch.