I switched to crystal nail files after having ongoing issues of my nails peeling. Before trying the OPI Crystal file, I tried a few other, less expensive brands, like Shany. Those were better than what I was using, but lost the grit after five uses. I decided to try the OPI to see if it was just an issue with crystal files or if better quality existed. The OPI is wonderful! Files my nails so easily, and the grit doesn't wear down the way the others did. Best part? No more nail peeling! I am forever devoted to OPI Crystal Nail Files!