1、WIDE APPLICATION: Connect and conduct electrical signals with high grade 7 core trailer spring wire suitable for trucks, trailers, motorhomes, cars, and boats. 2、BUILT TO LAST: Made of durable metal and TPU materials, this wire features high and low temperature resistance, acid and alkali resistance, wear, oil resistance for reliable performance. 3、SECURE ELECTRICAL CONNECTION: The 7 core design ensures a secure and stable electrical connection, allowing for proper signal transmission between the towing and towed vehicles. 4、VERSATILE COMPATIBILITY: The 12V 24V voltage output makes it compatible with a wide range of vehicles, ensuring efficient and safe electrical connections for towing purposes. 5、EASY INSTALLATION: With a length of 2M, this trailer spring wire provides enough flexibility for easy installation and connection between the towing vehicle and the towed vehicle.