The clamps aren't too bad but the cable is NOT 10AWG. It's only 13AWG. I measured 0.072" diameter (and that was being generous) which is the diameter of 13AWG. The second and by far the biggest problem with them is the crimp connection on the clamp. The crimp is not tight because of the mushy and oversized insulation. That means it's very resistive and can only handle about 2 amps. It doesn't matter how thick the copper wire is if the connections are resistive like these are These are totally worthless for jumper cables. They will work for a trickle charge.
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