For sale ($250 OBRO) I have a genuine Omega stainless steel micro adjustable size clasp, reference STZ00159 / 117STZ001159. This 6 position / click clasp has the diver extension as well and is the model factory fitted to the 43.5 MM Planet Ocean on its bracelets (which understand have a reference number STZ004972). The clasp is in good conditions as shown and can be used in many Omega bracelets to adjust bracelet size on the fly, similar to the Glydelock feature find on the Rolex Submariner and Sea Dweller models. On the Omega Seamaster Professional Ceramic (SMPc) 20 MM bracelet, reference 1515/816 can be retrofitted / added without the need of additional parts; on many Omega Speedmaster 20 MM bracelets, as well as on the 1610/930 Omega Seamaster (Speedmaster styled) bracelet it can be retrofitted but different clasp end links will be required (such as 118STZ000015 or 118ST1589; not included on this sale). These threads provides some examples on Omega models where people has successfully retrofitted the adjustable clasps: https://forums.watchuseek.com/f20/wh...609002-28.html https://www.google.com/amp/s/forums....0.html%3famp=1 https://www.google.com/amp/s/forums....0.html%3famp=1 https://forums.watchuseek.com/f20/it...t-4917447.html https://omegaforums.net/threads/micr...g-clasp.37817/ The current MSRP cost of the clasp is $320 plus tax (if you find a friendly Omega Boutique that will order one for you; Omega had recently increased their pricing on the adjustable clasps and are less friendly into allowing people to order parts of a bracelet for a watch retrofit) so here is your chance to buy one for less. Price includes shipping anywhere in the USA through USPS mail, payment by Paypal. I several positive buying / selling / trading references here, plus over 150 in Watchuseek (WUS), plus a a few more on The Rolex Forums (TRF) and "The Good Guys", so feel free to check them out. Also 100% positive feedback in over 1,350 transactions on Ebay under the same user name. Additional references available upon request. For any questions (or a HD video) please PM me or text me at 787-248-6267. Thanks for looking!