NGTlight 100W LED Corn Bulb Light Replace 400Watt Metal Halide Mogul Base E39 6000K Daylight Parking Lot Street Lighting Easy to install: Bulb with an E39 mogul screw base, making it a super easy LED retrofit and incandescent/metal-halide replacement. In most cases, just screw in. In others, since LEDs use a driver and not a ballast, you must bypass the ballast (Halide and other bulb types). Consult your electrician. Low power consumption. Save more than 80% in electricity compared with conventional high pressure sodium and metal halide lamps. Widely used in warehouse, parking lot, street,gas station, garage lighting 100w LED Corn Bulb Light Mogul Base E39 6500K Cool White 360 Degree Energy Saving light Replace 400w Metal Halide Certification and Warranty: UL DLC approved, 5 Years warranty direct from NGTlight