1964 1968 Ford Mustang generator / starter brushes (Not really Sure what it is)

Ford Part No: 7484C

Manufacturer: Ford

Part Number: 7484C

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I really have no clue what this is. I welcome any comments you have for me to figure out what this is. It's about 8 inches long.I have heard from a couple of ebayer that they go to a starter. also someone said they think it may be generator brushes . Both makes sense. It was in a parts box full of Vintage Mustang par