What is the real name for the u joint found on the steering shaft on a f100 76 4x4. I cant locate the part online.

 

Ive asked many of people what the name of that joint is, never got a real answer, and I also could not find one anywhere. On every one of my friends trucks ive looked and theirs are all super loose, And I thought mine was in bad shape!!

I finally avoided the whole rag joint setup and bought an aftermarket steering shaft. Im happy with that.