48RON54
Well-known member
In my line of work, we run 2/0 and 4/0 "feeder cable" that we "tie in" for "distros" and it's SUPER flexible in the cold and insanely heavy. It's way overkill (and expensive) for jumper cables, obviously, but I'm looking for that kind of quality. This stuff has thick, flexible insulation that doesn't crack. Very robust. Looks like this:
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We must be in a similar line of work. At work we make jumper cables out of 2/0 or 4/0 whenever a customer decides they are going to hack it up into a bunch of pieces. I noticed you aren't interested in making your own though, so good luck on your search.