Each Hose is designed to meet 3x their working pressure Utilizing 4, 5 plies of DuPont Nomex / Aramid fiber (no inferior Polyester is used) Higher pressure applications have a Red Iron Oxide internal color Flurosilicone elastomers and Fluorocarbon withstands oily residues Spring loaded 300 Series Stainless Steel band clamping force remains consistent through heat cycles Many specific kits for specific vehicles, turbochargers and intercoolers