Seems like a marketing video for Craftsman Chinesium. People think Craftsman still has a lifetime warranty, but they don't. I have a set that rusts like an old iron nail at the seashore and they refuse to exchange them. "Our warranty doesn't cover rust" they say. They claim it doesn't affect the operation of the tool, but it affects the use. You either have to clean the jaws of pliers and sockets before each use, or you can let the rust stains transfer to the items you're using them on. In an engine it's no big deal, but when you're working on polished chrome parts people tend not to like rust spots.