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