Be careful, do not confuse DIAMANCEL files with files, similar ones, in metal, stainless steel or sapphire. Indeed, the latter damage the nails because they are very abrasive because of the grains often too large and sometimes badly arranged. The nails will then tend to split.
Diamancel files use unique patented technology. They are made with genuine diamond particles on a flexible fiberglass base. Each file has a grain suitable for each category of nails, brittle, normal, thick, natural, sculpted, acrylic, toenails and the flexibility necessary and sufficient to file well. To truly appreciate Diamancel files, you have to try them. You will be won over and convinced.
Diamancel files are unique, there are no others.