Uncle's notes The double-button milled clasp is without a doubt the best clasp we offer to date. I have received so many requests from customers who had already purchased the US1450, but who wanted to upgrade their clasp. So I've made these for anyone who wants to blend their vintage bracelet with a more modern clasp. Click here to see an in-depth video comparison of our bracelet clasps. Consult the following chart for choosing the correct clasp for your bracelet. If your bracelet is not listed as compatible below, please reach out before purchase. Not all bracelets are compatible with the double button milled clasp. US1450 / US1035 US1479 Executive US1450 Speedmaster 19/20mm/Reduced X US1450 Seamaster X US1450 BB58 X US1035 Speedmaster 19/20mm X US1035 Speedmaster Reduced X US1035 Seamaster X US1035 BB58 X US1479 Seamaster X US1479 Speedmaster 19/20mm X Holzer Seamaster / Speedmaster X Executive BB36, BB54, BB58 X H-Link 6105 X US1450 BB54 X Executive SARB03x X Stock Omega Speedmaster/Speedmaster Reduced Bracelet X X SNKL / SNXS Executive X JDM Speedtimer X SNE57x Lincoln X What's included: One double-button milled clasp for the 20mm US1450/US1479/US1035/Executive Specs: Width: 16mm (18mm outer width) Length (closed): 32.5 mm Length (opened): 94 mm Weight: 20 grams Material: 316L Stainless steel Finish: Brushed