The Vevor semi truck air lines kit is a 12' 3-in-1 replacement setup designed for semi truck trailer and tractor air and electrical connections. It includes glad hands, gladhand handles, seals, hooks, a spring, Teflon tape, and a 7-way SAE-J560 ABS power line for a complete installation. The air hoses are designed to help maintain tight, leak-resistant connections for dependable brake response. Spiral wrapping helps keep the hoses and power line organized while reducing tangling and wear. Durable materials and an easy-install design make it a practical replacement for worn standard ABS air power lines.