I bought the Beall system with 3 individual wheels and the Tripoli, white diamond and carnauba. It came with the MT2 mount with adapter to a 3/8-16 screw. Each wheel has a 3/8 screw that screws into the adapter. I buffed a few pieces years ago and recently started turning again. It is slow to have to change the wheel each time. I saw Beall has a mandrel lit that holds all 3 wheels, but you can't but just the mandrel, then I discovered it takes wheels 3/4" ID. I picked up a piece of 3/8" all thread and a rod coupler and made my own. Spacing is about 4" between wheels. It works great with the rod coupler on the tailstock end with a 60 degree center. I am sure the 3/4 rod is for safety, I will not turn this past my lathes slowest speed, 540 RPM. It is smooth and plenty fast for what I am doing. I turned a tapered rod from an oak dowel last night, looks kind of like a pen sizing device. Just slip the finished pen blank over it and go to town. I am old and everything hurts and not real strong, so the low speed keeps me from losing my grip.
Mike