Impact Wrench, Drive Size 1/2 in Square, Max. Torque 150 ft-lb, Voltage 20V DC, Series 20V MAX, Cordless Tool Battery Type Li-Ion, Brushless Motor No, Cordless, Handle Type Pistol Grip, Battery Capacity (2) 4.0Ah, Tool Weight 3.4 lb, Battery Included (2) 21RV47, Battery Pack Replacement 21RV47, Features Lightweight Design, (3) LED with 20-Second Delay, Textured Anti-Slip Comfort Grip, Includes Kit Bag, Tool Box