Optronics Part #TL21RKMagnetic Towing Light Kit The Optronics TL21RK is a magnetic mount towing light kit that features heavy duty magnets. The kit includes a hardwired 25-ft. wiring harness that plugs into standard 4-wire flat vehicle connector. It is ideal for safely marking any vehicle towed behind an RV or another vehicle. The lenses and bulbs are replaceable. Packaged in a retail clam. Three Year Attributes: Packaged = Clam packPackage Quantity = 1