Waterproof Watch O Ring Diy Gasket Washers Assortment For Watchmaker

Professional watch maintenance tools, watch repairing and DIY watchmaker excellent accessories. Application Scenario: Used to add waterproof ring to the watch or replace the waterproof ring. How to use: Use the watch cover opening tool to open the back cover of the watch, put the waterproof ring in and then close the back cover of the watch.