I read about people wanting an onboard air systems capable of handling pneumatic tools and all the expense and hassle that goes along with it. I just wanted to through this out there as an option. I have had this Dewalt impact wrench for a few months and it continues to impress me. It does not spin as fast as my pneumatic one but it has all the power. It claims to have 400 ft lbs of torque. There are more and more battery operated tools that operate as well as pneumatic tools and the prices are coming down. Aside from having to build an air system to handle pneumatic tools other benefits are portability and no air hose to leak and get in the way. Without the battery this one is about $160.