Leatherman used to have a "lifetime" warranty, and to my understanding, there was some legal change that meant they had to put a number on it. I'm going off rumor and hearsay. That said, I've never known someone to get into any trouble with just asking nicely about having their beloved tool fixed, the worst I've seen is getting a different tool that was less suited as tools go out of stock. There have been a few threads about bad warranty service here, but if they sent letters in with their tool like they wrote their initial posts, I'm not sure the receiver knew exactly what was going on either. And at some point there is a limit, if the tool broke while removing the transmission from a truck, well, I mean, should have found a different adjustable hammer.