Amazing for shaping and polishing natural nails
These glass nail files (with very fine etching or embedded particles) are pretty amazing!  They make super quick work of shaping your nails and then you can use the same file to buff and polish the tops as well and they come out very polished and shiny -- look great and you can do each nail (shape and polish) in a hot second!<br /><br />They only have the file on one side and the end is also smooth for you to hold onto.<br /><br />They are washable and come in a nice container for storage.  Because they are so small, it is easy to take them in your pocket, purse, glove box, whatever -- they take up no space.<br /><br />They seem pretty robust so I expect them to last a long time -- much longer than a traditional nail file.<br /><br />The only tricky part is that you have to get used to using a file with no bend or give to it since these are a hard surface.  If you are used to an emery board, you will have to learn to follow the curve more explicitly since this file will not bend or follow contours for you.
Rating: 5 stars