MILWAUKEE 2757-22 Fuel 1/4'' Hex Impact Driver Kit POWERSTATE brushless motor runs cooler, lasts longer and delivers 55% faster speeds REDLINK PLUS electronic intelligence allows the choice of 3 fastening modes REDLITHIUM battery pack provides up to 50% more run time DRIVE CONTROL provides variable power and speed for precision work and heavy duty applications Motor provides 200 in-lbs to 1600 in-lbs of torque