ACDelco ARI2060 Li-ion 18V 1/2-inch  Super-Torque Impact Wrench with Digital Clutch, 500 ft-lbs, 2 battery included, ETC Tool Powerful 4-pole high torque motor delivers: 1,100 ft.-lbs of max. breakaway torque; 780 ft.-lbs of max. reverse torque; and 500 ft.-lbs of max tightening torque NO MORE OVER TORQUEING OR UNDER-TORQUEING - ETC tools will stop automatically when selected torque stage is reached Variable speeds (0-1700 RPM and 0-2000 IPM) allow faster fastening applications Built-in LED light effectively illuminates dark work areas Package includes: 2 x Li-ion 18V 3.0 Ah Battery Packs, 1 x Intelligent Charger, and Carrying Case