Ball joint socket size and where to purchase?

That's the kit I have and the 1 59/64" is sloppier than a ***** on payday. I measured a ball joint and it's 1.80. See Al's pic he posted.

What is the actual size of the socket?
I did not say they were the best. But they worked for the few sets of UCA I’ve done and the few sets friends have done, so for the 50 bucks or whatever I paid, they paid for themselves.