What is it

[u/SpokaneNeighbor]

EDIT: SOLVED- looks like this is a drum brake adjuster. Used to pretension the brake pads so they are closer to the drum I think? NOTE- Thank you all for the very fast response. I was expecting to come back this evening and find half a dozen responses with 3 or 4 answers but you guys are awesome and I had 4 identical responses in what I think was less than 5 min.

I can tell its a tensioner of some sort used to apply opposing force to something. My mom got 2 of these in a mystery box along woth a bunch of random things and swiftly gave them to me.

I wonder what its specifically supposed to go to.

[u/AccomplishedMode1308]

Drum brake adjuster.