The flat link watch bracelet was one of the most beautifully designed (and comfortable) ever offered by Omega. Its links were thin, so as to not overpower the watch with which it was paired. It was stretchy, so it remained comfortable throughout the day despite temperature fluctuations. It was finished beautifully, with polished outer and brushed inner links (a finish that was continued onto the clasp itself). And it had loads of rattily vintage charm. Forstner has made its own version of the flat link bracelet, retaining the beauty of the original but improving its fit, convenience, and wearability. Solid 316L stainless steel. Solid steel end pieces for a more flush fit to the case. Spring-loaded "stretchy" links behind the clasp ensure a comfortable fit despite variations in temperature and weather. Tapers to 16mm at the clasp. Length is adjustable (via removal of links with convenient single-screw system and micro-adjustment holes in the pressure clasp) from 120mm to 180mm. Fits wrists approximately 6" - 8". Screwdriver included for sizing. 19mm end links fit First Omega in Space (FOIS) case (including CK2998 limited editions and Hodinkee's 10th Anniversary limited edition). 19mm end links have been reported to fit Speedmaster 60th anniversary Trilogy edition, though not as precisely as the cases mentioned above. Pre-2021 20mm end links fit Omega Speedmaster Professional until the introduction of the 2021 caliber 3861 version. Post-2021 20mm end links fit the new 3861-caliber Speedmaster, the blue Snoopy, and the 50th anniversary Apollo 11 edition. Finish Choice of polished outer/brushed inner links, or fully brushed. Included Spring bars, screwdriver, one pair of end links.