Connects electricity between your towed car and your motorhome. Cable expands to over 8′ and conveniently contracts for storage. Both models are vinyl coated & spring coiled. Plugs are injected with silicone to prevent corrosion. The wires are water, oil and chemical resistant. The 4-wire Flexo-Coil has 4-16 gauge wires and the 6-wire Flexo-Coil has 4-16 gauge wires & 2-14 gauge wires.