The M12 FUEL™ 3/8 impact wrench optimizes torque in tight spaces. This lightweight yet powerful impact wrench offers up to 3X longer motor life, up to 2X more runtime, and proprietary Milwaukee® 2-mode DRIVE CONTROL™ for better control over the power and speed required for specific applications. The POWERSTATE™ brushless motor outperforms all leading competitors with constant power output, yet runs cooler with no wearable components. The REDLITHIUM™ 2.0 compact battery pack (sold separately) delivers up to 20% more power and 2X more recharges than standard lithium-ion batteries, as well as best-in-class performance in extreme jobsite conditions. The inboard fuel gauge helps you monitor the charge more accurately, so there's less downtime on the job. REDLINK Plus™ intelligence ensures optimized performance and protection from overload, overheating and over-discharge. The M12 fuel 3/8 in. impact wrench provides up to 1,400 in-lbs of torque. Its compact size and weight drive more control and less user exertion. The built-in LED light illuminates work surfaces in dark locations.