Idler Sprocket, 15 teeth, .50"ID x .32" wide x 2.62"OD. There is a small indentation in one spot on the seal. Does not affect the performance of the part, cosmetic.
Cylinder Hydraulic Lift 9N-8N-2N Ford Tractors 1939-1952. This is the internal cylinder that supplies the 3 Point Lift System. New OEM Ford part number 9N510D.