Originally Posted by sreten

Hi FB,

I'm trying to understand the top fitting but I don't have the experience.

Is the first fitting above matched to just the lug and sits above the head tube,
or does it still fit the head tube with a wider flange for the extra lug width ?

I'm not sure what is holding what in place. I want to assume the head
tube extends flush with the top of the lug, but it might not, leaving
a recess for that first part, how is it usually done ?

rgds, sreten.