Keep a stock of watch stem extenders, selecting inner and outer tap sizes, so you have the right size for the right job.
Watch Stem, Crown & Extension R GOLD watch Japan/Chinese 2035
Watch Crown Stem - New Zealand
Watch Stem Extender 100pcs Watch Winding Extension Bar 0.7mm
7750 Movement Pocket Watch Pole Extension Rod Bar Wristwatch
Comprehensive Swiss Watch Stem Extension Assortment - MY220
Watch Stem Extender, Sturdy Durable 1000Pcs 0.9mm Watch Pole Extension Rod Bar Wristwatch Winding Replacement for Extending Watch Crowns Stems : : Clothing, Shoes & Accessories
Winding Stems & Extenders for Winding Stems - Watch Stem and Extender Assortments
Crowns, tubes and extenders
Different Sizes Mixed Watch Stem Crown Tube Extender Assortment