The ACDelco ARI2061B Li-ion 18V 1/2" Impact Wrench delivers 625 ft/lbs of maximum breakaway torque, 480 ft/lbs of maximum reverse torque, and 300 ft/lbs of maximum tightening torque. A variable speed of 0-2,000 RPM and 0-3,000 IPM high power designed for faster speed application. The package includes: two Li-ion 18V 2.0 Ah battery packs, one 30 min. intelligent charger and a carrying case. Chargers utilize a patented Air-Forced technology which forces air through the battery to cool it while charging it, allowing for faster charging times.