Keep a stock of watch stem extenders, selecting inner and outer tap sizes, so you have the right size for the right job.
steel watch winding crown stem extender for watch broken stem
Crowns, tubes and extenders
1X WATCH STEM Extender Repair Broken Watch Stems : Thread sizes 0.5mm - 1.4mm £3.24 - PicClick UK
Watch Parts, Washer Rubber with Box Watch Stem Extender, Watch
Watch Stem Extensions 0.9mm external and 0.9mm internal threads a
How to Replace a Watch Stem - Esslinger Watchmaker Supplies Blog
: Clothing, Shoes & Accessories
Micro Traders 162pcs Watch Repair Kit Copper Stainless Steel Watch Stem Extender Watch Crowns 3.5mm / 4.0mm /4.5mm /5.0mm /7.5mm Replacement for Watch
Female Stem Extender Extension For Omega Watch Winding Winder
Qiilu Winding Stem Extender, Watch Extension Bar,7750 Movement
How to Attach a Watch Stem Extender