This Replacement Light Head is for use with the Portable Metal Halide Utility Lights. It is ideal for keeping any workspace illuminated, visible and safe. Metal halide work lights offer the lowest energy usage per lumens produced, with the longest lamp life and highest light output. Illuminated with 100 watt metal halide HID lamp. 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. Metal Halide lights offer an average life of 15,000 hours.