Universal Fit: Suitable for European cars, this trailer extension cable is used to easily connect vehicle lights to the trailer, perfect for extending the connection between the trailer and another car. The coiled cable can be extended up to 2.9 m under normal use. 7-Pin Trailer Extension Cable: CE and RoHS certified, uses corrosion-resistant metal contacts and high-quality copper, waterproof design, durable, and has a long lifespan. Can meet the requirements of various working environments. Durable Quality: Made of PU/TPU material, heat and flame resistant, this trailer extension cable has high elasticity. Furthermore, the spiral design provides good flexibility and plasticity, extending the cable length 3.5 to 4 times, with a maximum stretch length of 2.9m. Suitable for Most Vehicles: The trailer extension cable is suitable for most vehicles, including trailers, trucks, caravans, bicycles, tractors, motorcycles, agricultural machinery, RVs, etc. Waterproof Design: It is waterproof