The Milwaukee 0799-20 28 Volt 7/16 in. hex quick change impact wrench delivers 325 ft. lbs of maximum torque. Powering the 0799-20 is the revolutionary 28 Volt lithium-ion battery pack exclusively from Milwaukee (sold separately). Combining high torque with 1,450 RPM and 2,450 BPM, the 0799-20 provides the power, speed and run-time to drive larger lags, drill bigger holes, and remove larger nuts. The heavy-duty magnesium mechanism housing provides extreme job-site durability. The 0799-20 comes equipped with comfortable Nn-slip, soft-grip surfaces that reduce vibration and fatigue. The forward/reverse shuttle is conveniently located above the variable speed switch for fast, easy access. Designed for heavy-duty use, whether driving large lag screws, anchors and bolts, drilling large holes, or removing lug nuts, the 0799-20 provides the power, comfort and run-time to finish the job.