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It is used on watch crystal to make the watch waterproof,for professional users! Height 0.8mm fits for 0.8-1.5mm thick watch crystal. Height 0.9mm fits for 1.0-1.5mm thick watch crystal. Height 1.25mm fits for 1.5-2.0mm thick watch crystal.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.