I needed this for a #25 chain FTC robot project. We had this aluminum thing that barely worked. So I bought that. It "looks" very similar to the US-made McMaster crusher, which costs four times as much. It looks and feels solid and comes in a box, which suggests precision engineering, but it's not precision engineering at all. The cam holes are very sloppy so the fangs don't center the chain and after 2 or 3 uses they can't even hold them tight enough to push the pin down. That way the pin doesn't stay in the middle and I'm not entirely sure it still fits the #25 chain - the teeth are too big. The chain actually broke several times, so they couldn't be used remotely after that. I am now taking a recommendation from my robotics forum and have purchased a DarkSoul circuit breaker.
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