So they meet the necessary safety and reliability standards and better quality Energy Saving: You can save 80% electricity bill by replacing MH/HPS/HID and other Mogul E39 bulbs Long Life : 50000 hours lifespan, corn LED bulb is rated to last 23 years assuming 6 hours of usage per day. Please note that in some case the ballast may have to be bypassed when changing to LED. Most are plug and play but please check (LED use a driver, not a ballast) Available in 60watt, 80watt, 100watt and 120watt Led Corn Bulb Lights with Large E39 E40 Mogul Screw Cool White 5000K Special NoteThis bulb can use the TRIAC dimmers only. The item "120Watt LED Cob Corn Bulb 5000K Bright White E39 Mogul 600W HID HPS Replace" is in sale since Tuesday, October 8, 2019. This item is in the category "Home & Garden\Lamps, Lighting & Ceiling Fans\Light Bulbs".The seller is "ledlight_factory2014" and is located in default. This item can be shipped to United States.