Review title is compared [SEP] 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!