Description HQ Truck 3-in-1 Air Power Cable The Goliath Steel 3-in-1 Air Power Cable This is the ultimate solution for heavy-duty trucks and trailers. This 15-foot assembly integrates service and emergency air lines with an ABS electrical line. It ensures efficient performance and reduced clutter. How many air lines does a semi truck have? There are two air lines but there are three lines cab to trailer. The extra line is electrical power. So, the answer to the question is three lines. The Design: The durable design features 1/2″ gladhands and tractor fittings, along with a rugged plastic grip for easy handling and installation. Built to withstand harsh conditions, this air power cable provides reliability and safety for your vehicle’s braking and electrical systems. The 3-in-1 design makes it an essential component for long-haul and demanding applications. Compares to: Velvac 022041 Tectran 22041 Phillips 30-2171 Tramec Sloan 451098 Freightliner ABP N42AAPL15 Mack 1000-AEC157 Volvo Truck RCAEC157 Specifics: 15 feet long Goliath Model: KOGAP315E Material: Rubber, Elastomer plastic, aluminum alloy Color: Combined service (red handle), Emergency service (blue handle), Electrical lines (Green line) Function: combined air service, emergency and electrical in one single assembly Use: Heavy-duty Truck & Trailer Operating temperature range -40c to 120c Rated Pressure: 1.4Pa Packaging: 440mmx150mmx440mm and 7.1 kg (18Inch x 6Inch x 18inch, and  16lb)