drive shaft..?

[canes2016]

found this at a late 1700’s site, tend to think it’s from a later period but not certain what it’s from, farm implement??

 

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[Simon1]

Any splines on the inside ?

 

[creskol]

 

[canes2016]

Any splines on the inside ?

No splines on the inside, smooth bore. Just has the two ridges on the outer surface, opposite from one another.