Perhaps it's just me, but I haven't found a use for this yet in the shop. In most cases, when you need an impact, it makes far greater sense to use an impact driver (for screws) or a pneumatic impact wrench for everything else. And when a bolt or a nut is seized so bad onto something that the torque from an impact wrench could sheer the bolt or nut right off, then this tool is probably not going to help as well as a torch will. Which leaves those rare occasions where you can't use a torch. This tool might be usefult then, but if you've tried and failed every other way, this tool isn't going to be magic for you either, but it could help -- but rarely.<br /><br />For the price, this tool has not been worth buying (so far).