bought a cheap version to try the concept paid for it [SEP] i had never used a glass cuticle file before evn though i have probllem cuticles and have tried many other products to help them first i want to say that i definitely reccomend a glass file pusher for dried cracked nails it cleaned out the dried gunk very quickly i did damage my heathy skin a little but that was because i was pushing too hard i figured it out eary in my first manicure this tool can be used to clean cuticles smooth nails and sand down tiny hardened hang nails and used gently do it safelymy complaint is that on its very first use this cheap chinese tool developed a large chip in the nail pusher end now that i know i like the glass tool i will buy one of tempered czech glass