Have a pair of 501s. Sent one back to Buck to be sharpened after about 25 years of my abuse. When they got it, the package was empty. Someone from Buck called me up to ask what knife I had sent in, and they replaced it. "Thet's the kind of company we are" he said. The Wife told my daughter and her husband that the package had arrived empty and they bought me a replacement too. So, now I have two. Life is good and so is Buck.