Received this combi tool kit today. I had some repairs to complete but wish I had these tools from the start. I used a Black and Decker 20v impact wrench and before that a Bostitch 18v drill. Bostitch burned out trying to drive a 3" screw into a metal stud. I used a Bosch drill press to finish the job and it turned it off with no problems. It's actually a poor tool, it's powerful, but it's starting to show a lack of power when used in a construction environment compared to a very small home project. Get a Bosch impact wrench. This thing powered everything I threw at it today. With no problem. I even got a set of 1/2 Bosch impact sockets and it blew the nuts off my Honda Civic. I'm pretty sure it's not meant for that purpose, but I couldn't resist trying. It's a very powerful percussion instrument. I am very satisfied with this combination toolbox. I'm sure it will last for many years.