Benefits: I can cut, sand, grind, and shape materials that I use in my model railroading hobby. And the price is very low. Cons: Quality and utility is what you would expect from a cheap Chinese product. The product description states that it can be used as a drill. Well, as long as you just need the included drill-size hole, you're good to drill. But it doesn't accept small or large drills; only things with a shank the size of his lining. The cable extension doesn't have good bearings, so the small piece at the end tends to wobble rather than twist. For $23 I can use this thing for a few treatments. . But to have really accurate parts I'd have to invest hundreds of dollars in a dental handpiece, and for drilling I'll probably check out what Micro-Mark has for small drills. As long as your expectations aren't too high, this thing will do some basic work that you can't do by hand.