A 12-foot coiled air brake hose used as a service or emergency air line between a tractor and trailer. It has a red outer jacket, indicating the emergency air line per standard color coding, with 12-inch leads on each end and 1/2" male pipe fittings. It's cross-referenced to equivalent parts such as Haldex 11961-series, Phillips 11-321/11311, and Tectran 16212R.
