What is this pulley and bracket for?

Oldmanmopar said
is it forsale? and how much do you want for it? I'm sure I could find a use for it. looks adjustable?

It will be for sale. I am not sure as to how much.I am not looking to get rich, but I don't want to give it away either.

lemondana said
It is in fact, the water pump idler on a 70 up smallblock with AC and no power steering. They are very rare!

Thanks for the info, what is it worth? I think the guy I got it from said he paid $100, not sure if I remember that correctly.