This Review Title is Sand the Calluses Away and the content is: Great product. The individual who does my pedicures has a similar product so I had a pretty good idea on how to use it.  I think I would prefer the kind where I could attach sand paper discs. Time will tell how well the permanent disc will hold up.  I suppose I can always still put a sandpaper disc on the unit. Just be sure to not apply too much pressure or the unit will stop turning. Works better than any manual method..There are other information for this review, one is This reviewer did purchase it and the other is 2 people think this review is helpful.