I just bought a Milwaukie 18V 1/2" impact wrench for our car. We carry it in a holster by the co-driver. I paid $320 for it and that included the charger, two batteries, and a case. If you already have any Milwaukie 18V drills or sawzalls then just the tool without the other stuff is $175. They claim it has a max setting of 240 lb ft of torque which I find amazing. I looked at at a Makita 12V and 14.4V but the torque was only around 95 lb ft. Go to the Milwaukie website and you can read all about it. You wont see it at Home Depot or Lowes though, but most reputable tools stores who carry Milwaukie lines can order it for you.