Available in sizes 38/40mm and 42/44mm. Please note that if an item has “Preorder” in the title, the item is not in stock. The Item is on order with my supplier. Timeframe for arrival could be anywhere from 1-3 weeks. If you chose to checkout out, you accept the lead-time. If you order in stock items with preorder items, the entire order will be held until all items are in stock. If you want in stock items to ship immediately, please put them on a separate order so shipping fees will be accurately figured. No changes to orders will be allowed after order is placed.