D.O.T. AIR FITTINGS: Meets SAE J844 and DOT FMVSS 106 & Both lines are rated to -65F (-55C).Reliable and efficient connections for optimal braking performance HIGH-QUALITY AIRLINES: Our air brake coiled hoses are made of high-quality PA12 Nylon material, thicker and better quality than others. 3-layer integrated molding, fine workmanship, uniform thickness, high bursting pressure. Excellent flexibility, good chemical and wear resistance, waterproof, anti-aging. Not harden and become brittle easily in cold environments. The color is mixed in the raw material and will NOT fade like spray paint ANTI-KINKING DESIGN: Our air brake coiled hose features a safer anti-kinking design, making it easier to install in tight spaces. Better adapt to the semi-truck in the turn of the telescopic NO LEAKAGE: Both ends of the air hose are solid brass D.O.T fittings with sealant, no air leakage. Use the machine to insert the brass fitting into the air hose and lock it with a clamp. No air leakage and the brass fitting is difficult to fall off, providing a steady and long-time connection. Semi truck red blue air lines with spring protection sleeve. 1. It can provide extra support for easy coupling and uncoupling. 2. It can protect the air hose, and prevent kinking REPLACE FOR: Phillips 11-340, Tremec Sloan 451039N, Tectran️ 17A15-40H. Our hoses are designed and manufactured according to OEM standards, meet or exceed the original part in quality, and can perfectly replace damaged hoses D.O.T. AIR FITTINGS: Meets SAE J844 and DOT FMVSS 106 & Both lines are rated to -65F (-55C).Reliable and efficient connections for optimal braking performance.HIGH-QUALITY AIRLINES: Our air brake coiled hoses are made of high-quality PA12 Nylon material, thicker and better quality than others. 3-layer integrated molding, fine workmanship, uniform thickness, high bursting pressure. Excellent flexibility, good chemical and wear resistance, waterproof, anti-aging. Not harden and become brittle easily in cold environments. The color is mixed in the raw material and will NOT fade like spray paint.ANTI-KINKING DESIGN: Our air brake coiled hose features a safer anti-kinking design, making it easier to install in tight spaces. Better adapt to the semi-truck in the turn of the telescopic.NO LEAKAGE: Both ends of the air hose are solid brass D.O.T fittings with sealant, no air leakage. Use the machine to insert the brass fitting into the air hose and lock it with a clamp. No air leakage and the brass fitting is difficult to fall off, providing a steady and long-time connection. Semi truck red blue air lines with spring protection sleeve. 1. It can provide extra support for easy coupling and uncoupling. 2. It can protect the air hose, and prevent kinking.REPLACE FOR: Phillips 11-340, Tremec Sloan 451039N, Tectran️ 17A15-40H. Our hoses are designed and manufactured according to OEM standards, meet or exceed the original part in quality, and can perfectly replace damaged hoses.