A straight AN10 hose end for PTFE hose, aimed at the larger circuits: oil cooler feed and return, dry sump lines, and fuel supply on higher-output builds. The larger bore makes assembly a little more physical, so easing the braid back cleanly and seating the olive squarely on the liner matters more than it does on small sizes. Once the nipple is drawn home by the socket nut the joint is fully reusable. PTFE’s chemical resistance suits it to hot oil and aggressive fuels alike. Match the hose size exactly, use a proper AN spanner to avoid rounding the alloy hex, and pressure test before the car goes anywhere.