When this tool works, it's fine. God forbid that the chuck should fail as it did on mine. I've removed chucks on drills for thirty years and never encountered one I couldn't replace before this one. The chuck that came with the drill literally fell apart in my hands when I went to change a bit. This should never happen. Even after investigating how to replace it on the internet, it seems impossible to do. Further, about twelve years ago, I bought two 14.4 dewalt drills and they still work fine--slightly different model. The batteries lasted a long long time while being used commercialy. I don't know what happened, but I've had bad luck with the new batteries that came with this drill. In one case, one battery wouldn't hold a charge at all, and the other doesn't last very long. I have four dewalt battery drills along with a number of other dewalt tool, and I'm thinking about completely switching over to another brand.