I use it for filing my nails before I do the UV polish. It have save a lot time on filling my nail rather than using the file foam. Great quality and very light to carry!
Got this for my wife for Christmas as a side kick to the Amope Pedi thingy.......She absolutely LOVES them both and is searching for more stuff to grind away. =0) We will see how long they last, but for the price it is already a Winner! Highly recommend!