Dia30mm/33.5mm/34mm/37mm/39mm/40mm/45mm A-axis Sapphire rough plate for wrist watch glass/ Sapphire watch glass/ edge with radian double side polished/ high hardness/prevent from scratching A sapphire ...View More
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39 / 40 / 45mm Sapphire Crystal Watch Face Double Side Polished Microscope Slides