TS16949:2009, ISO9001:2000, DOT certificate Trailer air brake reinforced hose :• Material:PA,PU,double ... 1/2"fittings etc. or no fitting• Type:European style, American style, ordinary type-----------------------------------------NicholeMob.: +86- 159 2581 6050Tel: + ... -- PU (Polyurethane) air brake coils, spiral hoseDouble tube--Trailer air brake reinforced hose, air brake coil with double layerDouble ...