FINALLY !!

This is a Beads of Rice type of bracelet, all solid! The links are attached to eachother with small screws, a small screwdriver 1.4mm, is what you need to remove a screw.
The ways the bracelet is attached to the end pieces (3 middle parts stick out from the end-piece, the bracelet hangs on them) makes the lug-to-lug width is in fact a little bit wider.  There are many clasp-options, even a Seiko clasp with 4 adjustment holes and a divers’ extension.

It needs a clasp of 18mm wide. It tapers from 22mm at the lugs to 18mm at the clasp. This bracelet has been made for the Seiko Sports watch case that is SKX-shaped, with 22mm lugs (4R36-07G0, 4R36-08E0, 4R36-08Z0, others). The end pieces (solid steel) do not fit on a different watch case (the offset of the push pin holes makes it not fitting the original SKX!!). It comes with push pins with shoulders so they can be removed with ease. The watch case also has drilled through lugs, so that makes it even easier.