The M12 FUEL 1/4" Hex Impact Driver has a Milwaukee 2-Mode DRIVE CONTROL for better control over the power and speed required for specific applications. The POWERSTATE Brushless Motor runs cool with no wearable components.  The REDLITHIUM 2.0 Compact Battery Pack (not included) delivers more power and more recharges than standard lithium-ion batteries. Its reduced size and weight reduce user fatigue, while the onboard gauge helps you monitor the charge more accurately. REDLINK PLUS intelligence ensures improved performance and protection from overload, overheating and over-discharge. The M12 FUEL 1/4" Hex Impact Driver offers fastening speed comparable to 18V impact drivers, and 1200 in-lbs 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.