This Replacement Light Head is for use with the Portable Fluorescent Utility Lights. It provides energy-efficient lighting for a variety of work spaces. Fluorescent work lights use compact low-energy 55 watt fluorescent bulbs. Shade stays cool to the touch. Average bulb life is 10,000 hours. Metal halide lights are yoke-mounted to allow easy vertical and horizontal angle adjustments. Lights are housed in yellow powder-coated steel for strength and safety.