The Bosch GDS18V-740 18V PROFACTOR 1/2 In. Impact Wrench with Friction Ring is designed for breaking free and driving large bolts, nuts and anchors quickly. It is part of the PROFACTOR System, which pairs BITURBO Brushless Technology with a CORE18V PROFACTOR battery. BITURBO Brushless Technology is a high-performance motor and drive-train system designed to deliver power comparable to high-demand corded tools. The tool delivers up to 740 Ft.-Lbs. fastening torque and 1,180 Ft.-Lbs. breakaway torque, while maintaining long runtime. It offers controlled power output, with three speed/torque settings (0-800/1,200/1,750 RPM). The wrench features a rubber head casing that protects workpiece and tool from damage. This is a bare tool; battery and charger are sold separately.