3M AN4 AN6 AN8 Fuel Hose Fitting Oil Line Pipe Tube Stainless Steel Braided CPE Rubber + 0 45 90 180 Degree Swivel Hose End. Inner Hose Material: CPE Synthetic Rubber. Surface Finish: Braided. -Covered with high-quality braided nylon, which can enhance flexibility, maximum heat resistance, corrosion resistance and wear resistance.