Waterproof Plastic I Ring Gasket 0.6mm Height 16mm to 40mm Inner Diameter for Flat Watch Crystal or Domed Glass W7922

Waterproof Plastic I Ring Gasket 0.6mm Height 16mm to 40mm Inner Diameter for Flat Watch Crystal or Domed Glass W7922

It is used to watch crystal, not back case! for professional users! you have to know the exact diameter and thickness of your watch crystal before buying.

Height 0.6mm, thickness appr. 0.35mm

Detailed Size Information(INNER DIAMETER): 16MM-40MM

Each sizes contains 2pcs, total 98PCS/set

Package included: 1 set