The contains 8 insulated color-coded 16-gauge copper wires with a total length of 15'. The harness has a full-body insulated coating to keep the wires protected from exposure to the marine environment. The male and female speakon connectors include stainless steel hardware for secure boat-side mounting and provide an easy solution for engaging wired connections to your power source. Insulated coating Speakon connectors for easy mounting | Master Wiring Harness