The M12 FUEL 1/4" Hex Impact Driver delivers maximum performance in a compact size. This hex impact driver offers proprietary MILWAUKEE 2-Mode DRIVE CONTROL for better control over the power and speed required for specific applications. The POWERSTATE Brushless Motor outperforms with constant power output, yet runs cooler with no wearable components.  Sold separately, the REDLITHIUM™ 2.0Ah Compact Battery Pack delivers more power and longer run-time than standard lithium-ion batteries, as well as maximum performance in extreme job site conditions. Its reduced size and weight cut down on user fatigue, while the on board fuel gauge helps you monitor the charge more accurately, so there’s less downtime on the job. REDLINK PLUS intelligence ensures optimised performance and protection from overload, overheating and over-discharge.  The M12 FUEL 1/4" Hex Impact Driver offers fastening speed comparable to 18-volt impact drivers, and 135Nm of torque. Its compact size and weight allow access to tighter areas and reduce user fatigue. The built-in LED light illuminates work surfaces in dark work spots.