The SKIL PWR CORE 20 Brushless 20V 3/8-inch Compact Impact Wrench gives you big power in a compact, lightweight package with up to 170 foot-pounds of fastening torque, 220 foot-pounds of nut-busting torque, and up to 3,950 IPM for driving tough nuts and bolts. At more than 1 inch shorter than its previous generation, this cordless impact wrench is an ideal power tool for working overhead or busting hard-to-reach car lug nuts and caliper bolts. Its 3/8-inch square anvil features a friction ring for easy socket changes, and its digital brushless motor combined with three-speed selection provides high-performance power and precise control. This cordless electric impact wrench kit includes the 20V compact impact wrench, a PWR CORE 20 2.0Ah lithium-ion battery with PWR ASSIST mobile, PWR JUMP charger, belt clip, and battery jacket.