Replacing Milwaukee® M12™, M18™, V28®, and most other branded 9.6V-28V incandescent bulbs, the 49-81-0090 Upgrade to LED bulb works in most power tool work lights and delivers over 3X the run-time of traditional light bulbs. With a 50,000 hour LED and limited lifetime warranty; the 49-81-0090 is a solid state light that will not break from a fall. Limited Lifetime Warranty.