There are several reasons to use a stem extender:
BROKEN STEM/TOO SHORT: If you still have your original stem but it is broken and too short to use with your crown, you can buy a stem extender to lengthen the original broken watch stem to extend to the correct length that you need for your repair.
POCKET WATCH STEM: If you have a pocket watch stem that has broken off and there is not a pocket watch stem available in a replacement, you can use a watch stem extender to lengthen the stem to fit into the pocket watch.
CHANGE TAP SIZE: You can use an extender that will change the tap (thread) size from a larger or smaller size to a standard tap (thread) size.
REGULAR STEM TO MALE OR FEMALE STEM: Change a regular stem into a male or female stem to fit a one piece case.
- Inner tap size: original stem diameter Outer tap size: new stem diameter where the crown will attach
- Sold individually.
- Choose the stem that you would like from the drop down menu above.
*Sizes are approximate as measurements may vary slightly by gauge.