GLOBAL DOCK LIGHT HEAD ONLY SCREW-IN MEDIUM BASE PAR38 BULB COMPATIBLE 8' CORD & PLUG THIS REPLACEMENT DOCK LIGHT HEAD IS FOR USE WITH MOST DOCK LIGHT ARMS. THE HEAD COMES WITH A MEDIUM BASE SOCKET WIHICH MAKES IT IDEAL FOR LED PAR38 SCREW-IN LAMPS. (BULBS NOT INCLUDED). LIGHTS ARE HOUSED IN YELLOW POWDER-COATED STEEL FOR STRENGTH AND SAFETY. IT IS CETLUS LISTED.