1/0 Gauge Power/Ground Cable Specifications:1/0 Gauge Wire Can be used for Power or Ground Ultra Flexible CCA (Copper Clad Aluminum) Wire Xtreme Twisted This listing is for 25 feet of 1/0 wire. This wire is Ultra Flexible, and great for many car and mobile audio applications. This wire is made of extreme twisted CCA (Copper Clad Aluminum) wire.