last 3 months each, YES  FOREVER  NO WAY
they say these &#34; last forever&#34; in their description. After 3 months of my own personal use, the file is worn down quite a bit.  They are beautiful, unique and do a great job, but if it wears out after 3 months per file.... hard to agree that they last forever or that much longer then metal or paper files.
Rating: 3 stars