Straight 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. Use the straight body wherever the hose can run in line with the port, since it adds the least length and the fewest turns to the circuit. It offers enough bore for typical fuel and coolant duty without the bulk of the larger sizes. Intended for push-on hose only, not braided hose built for a two-piece compression end.