I bought this for the day I need it and that day is only recently. I am adding a folding extension to my table saw and wanted to deburr the inside of the holes I drilled in the saw body. I had no intention of doing this with a conventional drill unless I took the entire saw mechanism out of the body. Although it was inconvenient and required me to fiddle around a bit to find the right angle, this item did the job that almost nothing else would do. I've also used it to turn some screws where I couldn't get in with a regular drill/screwdriver. It seems well built, although I haven't taxed it yet, and the keyless drill chuck seems pretty good too. .To update; A few months ago I tried drilling some large holes in metal with this tool and the internal gears broke off. I took it apart to check and decided it wasn't worth fixing. It's a cool device when used within its limitations, but I'm not good with tools and ended up being disappointed.