An AN6 45° hose end designed for PTFE-lined braided hose, the size that covers most performance fuel feed and return work. PTFE hose is the choice for ethanol-blend fuels and for applications where permeation and odour matter, and it uses an olive or ferrule pushed onto the inner liner and compressed by the socket nut to seal. The 45° angle eases a hose away from a rail, filter, regulator or pump without the tight turn a 90° imposes, keeping the bend radius comfortable. During assembly, push the braid back cleanly and confirm none of it sits beneath the olive — a trapped strand guarantees a leak.