This is a factory duplicate of the 55-57 Chevy Belair / passenger car Fuel Line..  5/16 inch.

Its noted as being for outside of the frame routing (not inside frame)

These are a PITA to globally transport but we do it.. via additional plywood waffering and that makes it big but protected in transport and neat. Freight is additional. It will come pre bent but the main piece is curve in a big radius to allow for transport.

Stock item and USA made of steel.

Replacement lines are engineered from factory original lines and CNC manufactured for precision. They include the correct tube ends, protective wrap (where equipped) and are designed to work with factory components.