Duplex Boat Cable is a type of multi conductor cable used in DC circuits and low-voltage AC applications. Pacer manufactures 10 AWG Duplex boat cable in-house in Sarasota FL USA to ensure the highest quality. First, finely stranded, Type III tinned copper conductors are used. These allow for maximum flexibility. They also prevent corrosion at the same time. The PVC jacket helps 10 AWG Duplex Boat Cable to be flexible. It also serves to prevent moisture or air from building up. How does it do that? The voids between wires are completely filled during the extrusion process. This leaves no room for moisture or air to build up.As an added bonus, a talcum powder coating is applied to the interior wires. This coating allows the outer jacket to be easily removed. Just another reason 10 AWG Duplex boat cable is perfect for marine usage.This Duplex Boat Cable (EDMO# 10/2RYW500) is 10 AWG, has red and yellow cables with a white jacket, and comes on a 500 ft spool.