What is this?

[ecotec]

I have no idea what this is, or where it came from?

I cleaned out a drawer, and it was in there.

It says Blackhawk AZ1050.

 

[KnurledNut]

A coupler for a Blackhawk Porto-Power.
http://blackhawk.co.jp/porto power catalog4.pdf

 

[3baygarage]

Yes, internet says it’s an extension piece for a hydraulic set.

here it is at the bottom in Japanese

 

[ecotec]

Thank you. I think I know where I got it, too. Years ago, I bought a box at a autobody guy’s estate sale.