Diameter is between 0 & 1 gauge. It is not pure copper. It flexes quite well. lugs barely slip on. But they slip on. I used it to connect 2x 10,000 Watt Inverter's. Probably not suitable for a huge Welder. Will it handle car audio amplifier current draw. Of course. You can pay a lot more for pure Copper or Over size O gauge or True O gauge. But unless the power cable has to also be used as a welding Cable part time. Save your money. Aluminum coated copper. I used it also to hook up several deep cycle Battery"s to the monster alternator.. (300 Amps) I needed cheap that would do the Job. This did it. Good quality for little money with free shipping. The free fuse holder came in handy.
Verified purchase: Yes | Condition: New
Okay!!!!!! Look at how much wire there is. Just great product solid on the fuse holder. Great product great company just great
Verified purchase: Yes | Condition: New
It's cca wire so it isn't as good as ofc that's obvious. But for it to be the same amount of thickness as the 4 gauge wire I already have ran, makes it a waste of my time and money. They give you plenty of wire and the fuse box is awesome. But my only gripe is that it's just 4 gauge, it's not 0.
Verified purchase: Yes | Condition: New
During this travel ban I am unable to give a real review as it is going in my boat but I will say that the wire and accessories arrived timely and looks great.
Verified purchase: Yes | Condition: New
When you get into 1/0 gauge wire for your sound of course you want the best without breaking the bank right, this is it right here...sure there are better wires out there but they won't beat this price for this much wire. I'll recommend to anyone...
Verified purchase: Yes | Condition: New
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