The DEWALT DCF889HM2 20v MAX* Lithium Ion 1/2-inch Impact Wrench features a hog ring anvil for quick & easily change sockets. It boasts of 300 ft.-lbs of maximum torque to perform a wide range of heavy-duty fastening applications. The XR Li-Ion batteries with fuel gauge provide 33% more capacity over standard packs. This unit has a variable speed trigger with electric brake that provides user improved control. Also, the LED light provides user greater visibility when working in dark environments. It is enhanced with a durable magnesium gear case and all metal transmission for extended durability. Applications include: Driving and removing fasteners in wood, metal or concrete along with fastening and removing nuts and bolts. Includes a Fast Charger, (2) DCB204: 20V* MAX SR Premium Li-Ion Batteries (4. 0 Ah) and Kit Bag. (*Maximum initial battery voltage - measured without a workload - is 20 volts. Nominal voltage is 18. ).