This impact wrench has several handy features, for example that it's brushless. You don't need to bother with a cord, since it runs on a rechargeable battery.
From Data Powertools
Milwaukee M12FIW38-0 M12 FUEL 3/8" Impact Wrench With Fricton Ring Body Only
ITS
Milwaukee M12 FIW38-0 12V FUEL Brushless 3/8'' Impact Wrench - Body