DCF813D2-GB Cordless Impact Wrench, 10.8V, 147W. 10.8 V cordless impact wrench. This high impact torque wrench offers all-metal gearing for efficient power transmission, aluminum front housing which provides great heat dispersion. The 3/8 in square drive allows for more efficient torque delivery and excellent socket retention. A comfortable ergonomic handle and rubber reduce surface vibration and user fatigue.