This new in box Signal-Stat #620/621 Magnetic Mount set of 2 Lights are designed for a towed vehicle with a Cole-Hersee 7-way plug / socket compatibility. They feature a magnetic attachment for easy installation and removal. Made by Signal-Stat with a 29-foot wiring cable length, these lights. Perfect for providing visibility and safety while towing, these lights come in a set of 2 and are a practical and convenient accessory for any vehicle.