20V MAX 1/2" Impact Driver. Tighten and loosen lug nuts, bolts, and other fasteners with this 20V MAX 1/2-in Cordless Impact Wrench with Hog Ring Anvil Kit. The high-performance Impact Wrench combines 250 ft-lbs of max fastening torque with 400 ft-lbs of max breakaway torque in a compact size for a range of applications in tight, hard-to-reach spaces. The on-board LED was designed for improved visibility in dimly lit work areas. This cordless kit includes our most powerful, most compact, and lightest weight 20V MAX battery, with 50% more power, 25% more compact, and 15% less weight than the DCB203 . The DEWALT POWERSTACK compact battery work with all DEWALT 20V MAX power tools and chargers.