Fuel Hose , 1.will not permeation when install . own great Oil resistant property 2.Made by FPM+ CO +CSM 3 layers Fuel Hose Features:1)Made by FPM+ CO +CSM 3 layers2)Resistane to chemical attack,swelling and permiation by gasoline3)Oxidized gasoline,ethanol extended gasoline,diesel fule,oil or lubricants4)Oil,Ozone and heat resistant5)Got CARB Certificate from USA Fuel Hose (CARB certificate)