Continuing the discussion from Do we have tools for installing Trailer Hitch Balls?:
I figured instead of continued muddying up the thread, I continue the discussion here.
When thinking about some of the things that I come across at work, that I can discuss.
Here are a couple wrenches we used to use to break apart shaft couplings on a 4000hp motor, gear box & compressor. They have since removed the machines & installed newer machines, albeit them not being that old to begin with (only 18 years old, Life expectancy on them is about 50 years) The 12 point is 4 5/8”, the 6 point is 3”. We would use the all thread to pull them tight or loose.