Even the brightest bulbs will eventually burn out and need to be replaced. The STEELMAN 12110 is a replacement bulb for the 24-Inch Krypton Pro Bend-A-Light part number 15150A. Using the same type of krypton bulb as the stock Bend-A-Light it provides the same level of bright, long lasting light for far longer than a traditional bulb could manage. The bulb comes built-into in a plated brass and plastic fitting that is threaded so that installation is quick and painless, getting you back to work fast. Retaining the same 5/32-inch diameter as the original bulbs it has an approximate continuous burn time of 20-hours. Can also be used in the STEELMAN 96285 LED Pro Aluminum Bend-A-Light.