This did not work right out of the box. The clutch did not seem to engage so of course it would not screw anything! I returned it. Amazon was great at accepting the return and paying for return shipping. The refund was also processed super fast.
I got my new Screw-gun in timely fashion to help put down a new sub-floor. It was a great improvement over a regular drill with screw driver attachment. The only trouble with it is that the design for adjusting the depth of screw set is very poor!!! Screws either sink through the sheet or don't go in far enough. The instructions say to rotate or pull out the depth adjustment but it is only a piece of plastic that moves on a sliding sleeve, every time you set a screw. I am thinking of putting some type of o-ring on the darned thing to set the screws properly. Hitachi should be ashamed of this design.