This Review Title is Had I Known ... and the content is: I would have just grabbed my rotary tool and had it do double duty!  But that's a guy talking here.  For most people, a purposely designed nail tool like this that uses the same principles as a tool-set rotary tool will provide great cleaning and smoothing to nail surfaces, especially on the feet!  That said, this is not something I would have purchased now knowing exactly what it does..There are other information for this review, one is This reviewer did not purchase it and the other is 0 people think this review is helpful.