Featuring the power of NANO battery technology and the ability to deliver high-torque performance, the DeWalt DC800KL Impact Wrench makes quick work of tough fastening jobs. With a unique impact mechanism that reduces kickback and combines 1,400 RPM and 2,500 BPM to make loosening or tightening tough fasteners easy, this impact wrench is a perfect choice for adjusting lug nuts, working with concrete, or driving large lag screws. Switching from forward to reverse is simple with a convenient rocker switch, and at just 7.5 pounds with an ergonomic design, this wrench sits well in your hand for sustained on-the-job comfort. Also offering superior dependability, this tool makes use of DeWalt"s patented all-metal anvil design featuring a detent pin socket that prevents shearing, a durable, all-metal transmission, and a protective, heavy-duty magnesium gear case. The high-efficiency motor in this impact wrench even includes replaceable brushes for easy maintenance. This kit includes two 36-volt NANO-phosphate lithium-ion batteries and a one-hour charger. These exclusive batteries are approximately the same weight as traditional 18-volt NiCad batteries, providing you with more power and longer run times than competitors can offer. And each battery is designed to take an impressive 2,000 recharges, so you won"t have to worry about buying a replacement. Also include ed with this kit is a heavy-duty kit box for easy transport.