I bought a set of the fiber picks under the understanding that I could return if I wasn't satisfied. I tried and tried using my regular picks on the same locks. With not one lock picked with the fiber picks and all pick with my picks. I called and called trying to see what I had to do to send them back, no one would talk to me. I sent them back with a letter saying I wanted a full refund. They came back to me with some extra pices and the ones that broke trying to use them were replaced. Again I called and wrote. This time they said they would send a cut away padlock to watch what was going on. Nothing came! Now I sent them back again with another letter saying that I wanted a refund nothing else. They never came back and no refund.
I hear some like them
Good luck