Replacing Milwaukee M12, M18, V28, and most other branded 9.6V-28V incandescent bulb, the 49-81-0090 upgrade to LED Bulbs 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 Limi ted Lifetime Warranty the 49-81-0090 is a solid state light that will not break from a fall.