Cordless Impact Wrench Kit, Battery Included, Voltage 20.0, Drive Size 1/2 In., 0 to 1900 No Load RPM, Blows per Minute 0 to 2300, Max. Torque 780 ft.-lb., Clutch Style Ball and Cam, Handle Type Pistol Grip, Battery Included (1) 40F181, Battery Pack Replacement 40F181, Battery Type Li-Ion, Battery Capacity 3.0 A/hr. RestrictionsHazardous MaterialCalifornia Proposition 65 Warning: This product contains a chemical known to the State of California to cause cancer.