Stamped BT-104
Ball detent both ends.

 

A failed first attempt at a universal socket adapter?

It IS interesting though. Obviously, the ball detent hints that it should be a quick disconnect, but to what? (I know, you already asked that question). I'll be watching for an answer as well.

 

I have a few tools in my box like that, I made them to fit in places that's hard to get to. I have a cut off box wench that I cut off to get to the back exhaust nut That looks it would work for the same with a socket and small breaker bar.

 

Possibly something for a jack handle extension for a vehicle jack. Some of the ones for my trucks look similar but they are hollow.

Looks like it might have been heated to put the bend in there.

 

Probably a pre 1984 models cylinder head bolt socket handle with a 3/8″ square drive on both ends.Two different length ends allow access to most cylinder head bolts.

 

I've seen these before ... Memory isn't as sharp as it used to be

 

I think @FXD2003Rider is likely right, or at least right-ish. I don't understand them, but I see similar looking tools described as being a head bolt tool for old Harley's.

 

^^^^^^^^^^^
This....

 

Obviously a universal doohickey. You have it in the left hand position, flip it over if you are right handed

 

Give this man a chicken dinner.