Aurum Cables - Waterproof PVC - 12/2 Awg - 500 ft Outdoor Direct Burial Speaker Wire - CL3 Rated UL Listed - 500 Feet 12 AWG & CL3 RATED: American Wire Gauge rated gauge 12. CL3 rating permits in wall installation in commercial, residential, and office spaces. No more dangling wires to hide behind entertainment centers and future. PROFESSIONAL QUALITY SPEAKER WIRE: Aurum Cabless professional grade 2-Conductor in wall speaker wire. Connect speakers to AV receivers and amplifiers for crystal clear clarity and maximum conductivity. HIGH STRAND OXYGEN FREE COPPER: Buy Wire that you know will last for years and years to come. Refined copper alloy conductors are free of 99.9% Oxygen preventing corrosion to the speaker wire and ensuring maximum conductivity DURABLE YET FLEXIBLE INSULATED JACKET: Encased in flexible plastic making installation around tight angles and corners easy. Casing is clearly marked in 2 foot intervals for easy and accurate measuring. Comes in a Handy spool for easy installation and deployment.