Without getting into a pros or cons, for or against, discussion, I would like to know how the old school metal spoke protectors attach to the wheel inside of the freewheel. The hub (or, at least MY hub) has a slight step up between the freewheel threads and the spoke flange. It appears that you just sort of custom-fit the hole in the middle of the spoke protector to your hub's diameter. I can't seem to find any pictures of how these are mounted, and how they're retained if you just sort of PUSH them onto the hub. I'm familiar with the plastic ones that have the little tabs that snap into the spokes, but the metal ones don't seem to have those.

Detail pictures of your hub with one of these pie plates on it would be wonderful.

Thank you in advance. This ('87 Ross) is my first vintage bike, so I don't know these little details, yet.