Cable Matters 12 AWG In-Wall Rated (CL2) Oxygen-Free Bare Copper Speaker Cable 50 Feet This pro-grade 12 AWG, CM and CL2 rated speaker wire is an ideal choice for connecting your loud speakers to an AV receiver or amplifier in a 2.1, 5.1, or 7.1 channel home theater system Heavy gauge conductors are made of solid oxygen-free copper as opposed to copper clad aluminum (CCA) or copper clad steel (CCS) to resist corrosion and deliver pristine sound speaker cable has durable PVC jacket which complies with the CL2 rating for the fire safety requirements Two conductors are jacketed with color-coded PVC for easy polarity identification Premium speaker cables wrapped around a plastic spool in the box for easy and convenient installation without kinks