One of a dozen Dewalt tools I've owned, this drill bit was the first to fail. The engine drew its last breath today before emitting a puff of smoke and then dying. The motor overheated easily under load (quite a smell) and was obviously underrated for a lot of the work I used it for. I would not recommend it for drilling holes larger than 1/4 inch in diameter. Also, the forward/reverse switch broke within the first week of operation, making changing direction very uncomfortable from that point on. / this tool and drilled a lot of holes with it. However, given the quality of most other Dewalt tools, I expected more. Now I have to buy another hammer drill (not Dewalt).