Hmm... They're the bands that came with the GKN Leobro kit. They're on the car, so I can't get a good picture on them, although I suppose I could try if that would help. As I said, the metal is very thick and heavy-duty. When I put the crimpers around the raised nub that needs to be crimped, the handles are a little too far apart to be able to get my whole hand on them, so I can't grip them as tightly as I'd like, but even so, I can exert quite a bit of force, but they're just mocking me. It's like trying to bend a piece of rebar with a pair of needle nose pliers. Crap. I wonder if there's such a thing as a "power crimper."

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2003 X5 4.4i
1992 Porsche 968
2007 328i
2014 Subaru Forester XT