What is this tool thread? Take a guess. Stump the Toolman!

I've been looking for a brake lathe for a few years.

10 years ago they were $250.

The last few I've seen have been around $2000.

I did find a local radiator/brake shop that will turn drums as far as they will go and stay in spec for $10 or less if you drop off a bunch.

Not perfect but it helps, and is better than nothing.