It fits inline along the screen washer pipe to branch off to feed two windscreen washer jets........and also the pipes for the emission control system ( all those two tone valves that fit between , carb , inlet manifold and distributor )

These go yellowish over time but this is pure white.

Found on a lot of Fords that have a 2 washer jet system Such as Capri , Escort , cortina ,Granada etc

it is from a quantity bag and will be sent in a plain zip bag , so will not be sent with its original packaging