This C15000/5K/LED/HDRP corn cob-shaped LED light bulb from Feit Electric provides maximum illumination for large rooms, barns, or anywhere you need more light. Each bulb comes with a E26 (medium) base to E39 (mogul) base adapter to easily upgrade HID non-ballast fixtures to LED. Energy-efficient LED technology puts out an ultrabright 15,000 Lumens using just 125-Watt - up to 83% better than equivalent to 750-Watt incandescent. These bulbs have an average life of 25,000 hours/22.8 years, are ROHS compliant and 100% Mercury-free. The LED light bulb has a working range of 120-Volt – 277 volts. This bulb can replace up to a 150W high pressure sodium HID light bulb, a 100W Mercury Vapor HID light bulb or up to a 175W Metal Halide HID light bulb. LED lights don’t need ballast and so can be used in any socket. If you are replacing a high-pressure sodium, a Mercury Vapor or a Metal Halide bulb, you will need to bypass the ballast which is a quick and easy procedure. Then you can enjoy the energy savings, instant on, and brightness that LEDs provide.