This GERmanikure crystal glass file is handcrafted in the Czech Republic from thick Bohemian glass and specially formulated and tempered against breaking. Unlike thinner cheap imitations where the file may break, or texture may eventually scrape or even peel off like a sticker the texture on this file is chemically etched directly into the 3mm thick glass and is impossible to wear off. Chemical etching gently removes a portion of the surface of the file leaving behind random yet evenly placed rounded peaks. As a result, this file can actually be used either wet or dry in both directions without causing microscopic frays and gouges on either nails or cuticles.