Smallest available watch band springs?

Hi all,

I’m trying to find a source for the shortest watch band springs I can
find. This is for a larger volume product, so wholesalers are not out
of the question. So far, the shortest I’ve found is a 6mm. I am a
jeweler and not in the watch business so perhaps I’m not aware of the
major vendors out there.

Thanks for any
Katy

try Hadley Roma.