Okay so maybe I'm missing something here. In the chassis videos posted by tcss, the style 1 disk the OD is 1.31 which would allow it to lock in place between a male and female thread of a standard 1.25 ID mhs part. now with the style 2 and 3 the OD's are smaller than the ID of their respective parts.
My question how does style 3 allow you to lock in place a chassis when the OD of the disk would seem to slide right through the ID of the ribbed section. I'm sorry if this is a dumb question. I'm very new to this