Unfortunately these are not labeled and I don't see any stamp or easy way to identify them. Clearly 3 are for each direction as one side is more circular while the other is more elongated. They each measure 13 1/2 inch3s long and 1" wide.

I've probably looked over a thousand listing pictures and don't see any like thus. The closest seemed to be the ford custom shape and design but I am not sure. If someone does know what it's for please feel free to reach out.

Please review pictures and please let me know of any questions.