Fits Alpinists (SARB017, SPB121 etc) and Baby Alpinists (SPB155, SPB159 etc). Will also work for the Hamilton Khaki Field Auto 38mm. $90 shipped. Zelle/Venmo. PayPal GS for 3% extra. Will ship CONUS via USPS. This uses the Strapcode end links of the Alpinist with the Strapcode bracelet of the Seiko Speedtimer for that 20mm to 16mm taper. The Strapcode bracelet for the alpinist only tapers down to 18mm, so this custom combo bracelet is perfect for you if you feel the SC bracelet was too chunky. Bought this from another WatchExchange user, but decided to go back to the oem bracelet as I prefer the female end links for my small-Ish wrists. Still in great condition, no major scratches. Currently sized for my 6.5”Ish wrist and comes with two extra links.