The hose features clear PVC coating, PTFE inner lining, and premium stainless steel braided armor. PVC hose coating adds great looks, abrasion protection to expensive parts, and resistance to harmful UV rays. PTFE lining is an inert material, compatible with all hydraulic and brake fluids, has a heat range of -158 to 500 and protects brake systems from moisture, unlike other materials such as nylon. Stainless steel braid is superior in pressure rating, flame resistance, and volumetric expansion to all other materials, resulting in unmatched stopping power