I bought it for amateur use with a hexagonal socket so that I don't have to use a chuck. I've had it for 2 days and I don't have a final opinion yet on the quality, but I am very satisfied with a cobalt test I did. I compared it to a black & decker set that I have, and it is much better by far. Of course, I used the same tool, at the same speed, with a bit of the same diameter, and on the same material. It also comes with some standard bits (ph + trox), and although the adapter is magnetic, it doesn't magnetize or lock well. Of course, I don't care about these, I bought it for the drills. I'm currently building a warehouse, so I will be using them extensively in the near future and I will come back with feedback.

-1 star because I would prefer it to have no bits/adapter, etc. and to have more options for the drills (besides cobalt/for metal, it has very few numbers for wood and masonry)