Review on 🔊 Enhance Your Audio Experience with SoundBox T4AW-R: 4 Gauge Amplifier Install Kit for Complete Amp Wiring Cables, 3500W Power by Jesus Jenkins

It doesn't mention what material the power and ground wires are made of, but I took a chance. So be careful buyers, this is a copper clad aluminum wire. Fits a small 500w amp that I currently use but will need to upgrade if I get something more powerful. Also, the connectors, especially for the 4 AWG cable, are cheaply made and very thin. I broke one while trying to ground it and had to buy a new one at the hardware store. I replaced them all. The speaker cable is not used but it looks better, I have no complaints about the RCA cable. Basically I just wanted people to understand that the 4 AWG wires in this kit are NOT copper. It's just aluminum with a copper coating.