Forestry fire hose. Also great for RV use! The polyurethane lining consists of a single-ply extruded tube of synthetic high tensile TPU compounded that resist ozone. Features a smooth inner surface for better flow characteristics. The hose is terminated with brass garden hose threaded couplings complete with gasket and fitted with strain reliefs inside the ferrules for long life. This hose meets or exceeds all performance requirements of federal specification NSN# 4210011671061. NOTE: not ideal for home garden hoses. It will kink with low water pressure.