The mount is two discs that are screwed together. There are two different "slots" in each half which when faced together with the pole sandwiched between them, fits onto a variety of pole sizes depending on how you match up the slots and which slots you choose. It's really hard to explain but I use it on at least three different stands. Since my stands are all telescopic, each section has a different diameter and it works no matter where on the stand I put it. I have stands of multiple sizes and it works on all sections of all the stands that I have.
Thanks, KF...makes much more sense now...trying to imagine it fitting some old stands I have 5/8 and 1".....
Appreciate your feedback