PSI WoodworkingLTCA18 Live Tailstock Chuck Adapter to 1" x 8tpi Thread with #2 Morse Taper Mount

How many bearings? Can't seem to find it in the specs.

Do the threads spin independently of the bulky live center or is the bulky part of live center connected to the threads and both spin together ?

Can you not apply pressure to this item? Any pressure at all turning between center, this item sounds like its going to explode.

I need one of these but with a 3/4 " 10 thread to screw a Rubby Chucky on. Do they make such a thing?