An impact wrench is a tool designed to allow mechanics to apply high amounts of torque to a nut and bolt fastening in order to loosen or tighten the fastening with a minimum of effort.  Impact wrenches have traditionally required a connection to an air supply in order to generate the necessary power required to apply the necessary force to tighten and loosen nuts properly.  One of the latest developments in the market is the release of a high quality cordless impact wrench that does not need to be connected with an air compressor to gain power.

One of the biggest criticisms applied to traditional air guns is that they are quite an unwieldy tool to use – particularly in a restricted environment such as a workshop.  An air gun or impact wrench has traditionally required a great deal of air pressure in order to give it the force needed to work properly, and this has meant it being connected permanently to an air supply or compressor, and having a large trailing air hose all the time.

With a cordless impact wrench, it is possible to entirely dispense with the air hose and air compressor, and give yourself the freedom to move around the workshop quickly and conveniently.  Cordless tools are much easier to use and more comfortable.  Rather than a stream of air, these tools work more like a traditional cordless drill and use a battery for power, although in order to apply the correct amount of torque to a bolt they do tend to have a great deal more con