150-degree push-on hose end in AN6 (-6), pushing straight onto socketless hose and gripping the barb without a clamp or crimped socket. AN6 is the everyday size: carburettor fuel feed, EFI returns, coolant overflow and header-tank runs, PCV and light oil plumbing on most street and club-level builds. One hundred and fifty degrees is very nearly a reversal, and it answers a port pointing directly away from the run with no space to loop the hose by hand. It offers enough bore for typical fuel and coolant duty without the bulk of the larger sizes. Push-on assemblies suit low-pressure lines, so keep them off pumped brake or clutch circuits.