Upgrade your car audio system with this True AWG 2/0 gauge power or ground wire from Sky High Car Audio. Made of oxygen-free copper, this wire ensures maximum conductivity and durability. It has an internal diameter of 16 mm and an outside diameter of 20 mm, providing ample space for high current flow. The matte finish enhances flexibility, making it easy to install in various positions. This wire is available in sizes of 25 feet, 50 feet, and 150 feet on a spool. It is suitable for both indoor and outdoor use in car audio systems and automotive electrical systems. The product is compliant with relevant electronic cable and audio cable standards, ensuring safe and efficient performance.