Aftermarket axle shaft identification?

I purchased a spare dana 30, the seller told me it had aftermarket axle shafts, but could not remember what brand. They look stock to me but maybe someone can help point me in the right direction?
THANKS!

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Can't tell anything from that pic! Take another of the entire axle.

Well without seeing all sides of both inner & outer shaft yokes, its hard to say. BUT if I had to guess the inner is OE and the stub is 1040H or a 4xxx(chromoly). But, since this is in a ABS style (hence tone ring), I D K, even though a tone ring will tap right on a aftermarket chromoly shaft, its just odd to see.