They are Tom Fuller's flints. But, the point I want to make is, it is the lock. The lock is the heart and soul of a good gun. A good lock can make or break, another wise well built gun. I have one brand of lock that just is not as good at keeping the gun shooting as another brand of lock. Heck, if you want, just send me your old flints so I can keep shooting. :wink: Of course, I really only need a few to give me a lifetime supply. :thumbsup: Heck, maybe I should try using chirt. :grin: Heck, didn't I hear that Tom Fuller retired? He didn't retire, he just gave up when he heard about these locks. :grin: