... NameChangrongModel Number12*9colouryellow, red, black, blue, whitestandardAmerican style, European styleNylon tubing (PA tube, Polyamide tube), Trailer Air Brake Hose, seven cable ... : PA12, PA11, PA6, PE, PU 3.Excellence: have optimun in nylon chemistry and the physics stability. lightly, softly, resisting compression,resistant ...