I have mixed feeling on this particular nail file. It's Probably the absolute best nail file I have ever used. I used to use the metal nail file which take off way too much nail, but this opi crystal nail file is awesome. It will leave nails with amazingly smooth edges and nails look classy. I gave it three starts because there are a couple cons that I have realized about this nail file. First it is weak it does a awesome job if you have small thin nails but if you have thicker nails or want to use it on your toenails it does not hold up as well, it definitely will not be a great choice for men. Second it breaks very easily especially if it falls on a tile floor. Third it wears out fairy quick, maybe that depends on how often you use it but for me I like to file my nails every couple of days and it wore out quick for me.