.This brand-new 12V core trailer spring cable acts as a high-grade replacement part tailored for semi-trucks. It adopts an elastic spring layout plus a strengthened inner core, keeping electric conduction steady through repeated stretch and bend. Tough outer casing delivers great anti-wear and anti-rust ability, fitting rough road surfaces and variable weather well. It comes with a standard 12V voltage design, so it works compatibly with most semi-truck and trailer electrical layouts. With dependable overall performance, it serves as a great substitute for routine vehicle repair and upkeep.