This Milwaukee 2799-22CX pack features a compact brushless hammer drill and an impact driver. Running off 18V of power, the 2799-22CX is part of Milwaukee's M18 range of handheld power tools. It comes with the 1/2" hammer drill, as well as an impact combo kit, which includes a portable 1/4" impact driver. Thanks to their brushless motors, both products are highly efficient domestic power tools.