Review (3/5): Glass nail files are not all the same!
It took a while to find a quality glass nail file, one that had a finely-etched abrasive surface. NOT this file. This item has a rather rough surface, and I'm not sure that it is etched, as opposed to presenting a secondary abrasive adhered to the glass. So far, the only file that meets my expectations is made by VAGA. It's the real thing. As far as I can determine, most of the low-cost files are not acceptable. Nice little individual protective cases though...