What are the cup sizes offered? Is there a video showing how to operate?

The cup options available are 1", 1-3/8", 2-3/8", 3-3/8", 4-3/8" with either 1"-8 or 3/4" NPT Thread. I do not have any videos available of that machine in use however Covington Engineering, the manufacturer of the machine, may have some. I searched YouTube and there's some videos on using a three headed sphere machine, but not this one in particular.