The round ring looks thick in width and small in the inner diameter, and there are a couple of things that can do that. I'm thinking that round ring one may also be the zoom magnifying it, making it appear a thicker gauge. Another option is it all depends on how he hits it with his hammer on the anvil. If they are 16g 8mm, they're the same as mine and look it too with some of mine that I squish bit time. Unfortunately I can't seem to log into my flickr, but as soon as I can, I'll post up some of my pics, including not pretty ones I didn't share yet, to have for comparison.