Bosch Freak 18V Brushless Cordless Impact Driver (2X 2.0Ah Batteries Included)

Two-in-One chuck – features a 1/4 In. quick-change hex and 1/2 In. square drive chuck that drives both bits and sockets
EC Brushless motor – delivers a max of 1,650 In.-Lbs. of torque and up to 3,200 IPM for professional power
Performance Control System – adjusts the impact driver's three torque and speed settings for precise fastening