18.8mm straight ends you can file to 18mm or 17mm.
Spring bars included, tell us what size to send.
Adjustable from 5 3/8" (137mm) to 6 1/8" (155mm) without a watch.
We can shorten it for no extra charge and might have links to add, please send a message with length you need before purchase and we'll see if it can be done
