Whats this tool called? Attached pictures.

It’s called a picture of a modified socket in a mans hand on a truckers forum.

Yes, you are most welcome.

 

Open sided socket 6000 ? Just shooting in the dark here....

 

Looks like a custom ground cheap hollow extension attached to a socket

 

You think that’s a stock socket, or it’s been modified?

 

flare nut socket i bought them from snap-on in the 90's when i was turning wrenches. i use them for doing the over head on my truck that one is metric bcause of the hash marks on it

 

Betcha @Goodysnap or @pushbroom will know.

 

I used one like that to remove muffler bearings!