This adapter lets you span 3' to connect your 7-way, RV-style, vehicle-end connector to the 4-way flat connector on your trailer. Coiled cord ensures that wires won't drag on the ground ... to a trailer with a 4-way flat plug Coiled cord stretches up to 3' long Prevents wires from dragging on ground Sturdy, weatherproof construction Molded construction resists corrosion Brass connectors give