Norgren pneuflex polyurethane spring coil compressed air hose norgren pu311200438 a range of polyurethane spring coil hoses with nickel plated brass swivel fittings at both ends the hoses have a high degree of flexibility making them suitable for high mechanical deformation use on compressed air systems for machine tools etc norgren pneuflex pu311200438 pu spring coils 4m 12 x 8mm hose r38 thread