This AN8 hose end reverses the line completely within the fitting body, which is often the only workable answer when stiff dash 8 PTFE hose has to leave a port and immediately return alongside itself. Forcing the same turn into the hose would exceed its bend radius and damage the liner. Sealing follows the standard PTFE method, with an olive compressed onto the liner as the socket nut draws the nipple home, keeping the fitting reusable. The angle is fixed once the hose is made up, so confirm the orientation against the real routing, and make sure the hex is still reachable with a spanner afterwards.