Tectran 17215 15&#39; Aircoil Set 1 Aircoil Set with 1 Blue 15' Air Coil and 1 Red 15' Aircoil. 12" Pigtails with 1/2" Fitting. Excellent Coil Memory And Durability. Color-Coded (Red - Emergency, Blue - Service). Meets SAE J844 and DOT FMVSS 106. Designed For 150 PSI Operating Systems. Resistant To Attack By Gasoline, Diesel Fuel, Methyl-Alcohol And Zinc Chloride. Male Pipe - Brass Fitting. Galvanized Steel - Spring Guards.