Review (2/5): compared
I bought this from China glass nail file and the Czech glass nail file to compare. The Czech glass one seemed to work better. But the China ones comes with a nice case. Nail file was ok... so depends on what is more important to you. Better case ok file, or better file and have to buy a better protective case to put it in. The cost difference was close (so maybe paying more for a nice case). So I chose to go with the nicer nail file and bought a plastic test tube to put it in. Works great!