This is an NOS B-7557-B clutch release bearing grease connection line used on 1932-1934 Models B, BB, 40, and 46 cars and trucks.
This connection is mounted to the metal inspection hole cover and the clutch release bearing (throwout) hub so that the bearing can be lubricated without removing the floorboard or the clutch inspection hole cover on the transmission case.
The overall length of this connection is 6-3/4 inches.