Navistar SMR20247 Air Brake Coil Set Pair of red emergency and blue service air brake coil 15' length with a 12" tractor-end pigtail and 12" trailer-end pigtail. Excellent coil memory and durability featuring a cold flexibility rating of -40 degrees F Heavy gauge plated spring guards minimize the propensity for hose kinking Easy to find brass male pipe DOT fittings are field replaceable aiding in the reduction of maintenance costs DOT FMVSS 106 and SAE J844 Compliant color coded assemblies