Re: How do I use this Speeco chain breaker
I have no idea about what you have used or on what.
I have one of those chain breakers that you have pictured and I have used it on many different sizes of chain. With a dremel first to grind the pin flush with the side plate. And always with a master link.
Anything else, I can't help you with.
The only thing in my garage with 4 wheels is the lawnmower