Introducing Tectran's Industry Grade Aircoils: -Premium Nylon Construction: Crafted with premium, unprocessed virgin nylon tubing, these aircoils are built for durability and longevity -Extreme Cold Flexibility: With a remarkable cold flexibility rating of -40degF, these aircoils remain flexible even in the harshest cold conditions -Anti-Sag and Stretch Technology: TECTRAN's Anti-Sag and Stretch manufacturing and coiling process ensure these aircoils maintain their integrity over time -High-Quality DOT Brass Fittings: Equipped with DOT brass fittings featuring TECTRAN identifiers, these aircoils provide reliable air connections. (Fittings: 1/2\" LIFESwivel(R) tractor fitting thread, 1/2\" trailer fitting thread) -Corrosion-Resistant Spring Guards: Heavy-duty plated spring guards offer corrosion resistance, extending the lifespan of the aircoils -Exceeding DOT Regulations: Spring guards with closed coils extend well past 2 inches from the fitting, surpassing DOT regulations for added safety -DOT FMVSS 106 Compliance: These aircoils exceed DOT FMVSS 106 standards (49 CFR 571.106 & 49 CFR 393.45), meeting stringent safety requirements -LIFESwivel(R) Technology: Featuring Tectran's LIFESwivel(R) technology, these aircoils come with a live swivel design made of all-brass construction to eliminate corrosion, ensuring long-lasting performance. (1/2\" Tractor Fitting Threads) -Easy Installation: The fitting, located on the tractor end of the coil, is designed with a double O-ring leak-free \"Life\" design for quick and easy single-wrench installations -2-Year Limited Warranty: Backed by a 2-year limited warranty, these aircoils offer peace of mind and assurance of quality Upgrade your air connections with Tectran's Industry Grade Aircoils, known for their premium construction, extreme cold flexibility, and compliance with DOT standards, all backed by a 2-year limited warranty.