Feature:
100% brand new and high quality.
Repair parts for watch movement parts.
The product material is durable and has a long service life.
Oil resistance, acid and alkali resistance, anti-aging performance
Contain 18 inner diameter specifications (16-28mm ± 0.1mm tolerance), suitable for most watch models
Prevent corrosion of the movement caused by seawater, sweat, and lubricating oil infiltration