content: I purchased this dremel to widen my iphone dock so that it would fit the iphone 3GS. I know what you're thinking- just get a new dock. I am tired of being raped by apple so I saw this on YouTube and figured "Why not give it a shot". The dremel was able to shave the dock easily and with minimal effort. I was surprised how precise this instrument is. Once the grinded areas was sanded you could hardly tell there was any work done at all. For about ten dollars more than the dock cost, I now have a really cool tool with many practical uses. Get the corded one above and not the cordless as the power difference is huge and who needs to mess with the batteries.