The Cerwin-Vega PW18G250R is an 18-gauge primary wire designed for automotive audio system installations. It features a frost red color and is constructed from tinned oxygen-free copper (OFC), ensuring high conductivity and resistance to corrosion. The wire's outer diameter is 2.4mm, and it's composed of 16 strands of 0.25mm OFC, adhering to U.S. specifications.