Excerpt: The shaft was completely loose and fell of right out of the box. It would not thread onto the drill and didnt allow the drill to drive screws. The depth set dial spinned and adjusted the depth but still wouldnt drive properly. CPO sent me a new unit and it had the same proble.
Summary: I have an older version of this tool (6801) with less power, no reverse, and a fixed speed rather than a variable. Even with these limitations, this was a very useful tool. I only work with drywall as a DIYer, but the time and efficiency savings from having a specialized tool were worth it for me.