Kord Ultra Flex 12 Gauge Speaker Wire - over sized Oxygen Free Copper speaker cable provides superior frequency response compared to smaller, conventional speaker wire. Each conductor is composed of 294 strands of the finest copper for superb audio accuracy and flexibility. The Kord Speaker wire is wrapped in ultra flex red/black PVC with a side by side round cable profile. Kord Utra Flex Speaker wire is basic side-by-side, oversized speaker cable. Utilizing high strand counts of fine, pure Oxygen Free Copper make the Kord series a very flexible speaker wire. Applications include home and mobile audio. The side by side profile allows for ease of installation under carpets or around base boards. The cable is finished in a translucent matte red and black ultra flex PVC jacket to clearly indicate polarity. Core Material: 36 Gauge Oxygen Free CopperLength: Available in various length Dielectric: Ultra Flex PVC Outer Diameter: 9mm x 4.5mmMax Continuous Length: 1500 Feet Plain and Simple Specifications Wire type - CCA or OFC These materials are commonly used, but not commonly stated when shopping online. Know what you are purchasing. Both metals are capable of performing up to their rated loads. American Wire Gauge Wire gauge is crucial to powering your system correctly. Undersized cable will create unsafe conditions and may shorten your amplifier's life. True American Wire Gauge (AWG) Products Using American Wire Gauge standards, the gauge of stranded wire is determined by the total area of the conductor. To calculate this you would take the area of each strand and add it together. This area, in square mm, then determines gauge. Speaker Wire is often written as 12-2 or 12/2. This means 12 gauge x 2 conductor, both positive and negative signal are carried within one cable and are each 12 gauge. Diameter is not as critical with stranded wire, this is due to the tiny air gaps between each strand. Diameter may fluctuate with strand size and how tightly wound the rope of the cable is. The smaller the number, the larger the wire, until you reach zero or aught (0). Most speaker wire ranges from 10 to 16 gauge. 18 to 22 gauge is often much too thin for most Home Theater applications. Based on AWG, the true gauge of this cable is 12 Gauge Oxygen Free Copper - The standard in audio Quality cables use quality materials. Oxygen Free Copper is copper of at least 4n purity. That means the conductor must be at least 99.99% copper. Copper speaker wire provides lower resistance than similar sized CCA cable. This means improved frequency response. The ultra fine OFC strands in the Kord speaker wire allow for more current to flow as AC voltage travels on the conductors edges. Another benefit to the high strand count, our cable is incredibly flexible