Product Details  we specialize in air spiral hose ,use for the air brake of truck ,trailer ,tractor and so on  Trailer Air Brake Hose/Spring Air Hose/Trailer Spiral Hose:  (1) Available material: PA12  (2) Hose size: 12mm*1.5mm(OD*wall thickness)  (3) Available Model : American style and European style (4) Applications : Air system connections in tractors, trucks, semis, and trailers.  (5)Working Pressure: 8Mpa and the operating temperature is -40 --120o  (6) Color : red ,yellow ,black or any color you require .  Welcome to visit our company at any time . Thank you !