Review title is These are the worst!!!! [SEP] I purchased a Unicorn Crystal Nail file from Bona fide beauty. I love it. So smooth and gentle. I purchased these because there were 5 and I like to keep one here and there. What a mistake. They are like sandpaper so rough on my nails and not smooth. I opened one and it was stuck the file went flying and broke. Save your money and buy a good one.