Milwaukee Tool M12 FUEL 3/8″ Impact Wrench (Tool Only) POWERSTATE? Brushless Motor: Delivers up to 1,400 in-lbs of peak torque with maximum sustained torque to complete a variety of applications REDLITHIUM? 2.0 Battery Technology: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack life than any battery on the market REDLINK Plus? Intelligence: The most advanced system of cordless power tool electronics. Provides optimized performance and overload protection using total system communication between tool, battery and charger DRIVE CONTROL?: Two fastening modes provide variable power and speed for precision work and heavy duty applications