Watch Stem Extender TAP10 (.90mm) / TAP10 (.90mm) 88.236

ONE Watch Stem Extender TAP 10 (.90mm) / TAP10 (.90mm) - which means same threads on both sides - roughly 12mm long with a 2.5mm hub, supplied by Esslinger as P/N 88.236.  See pictures for further details. Images do a pretty good job of representing the item.