1.0-1.2mm Edge Thick Double Domed Sapphire Watch Crystal 20mm-40mm Round Glass

Description

1.0mm-1.2mm Edge Thick Double Domed Sapphire Watch Crystal 20mm-40mm Round Glass
Flat Bottom Domed Top, with Magnifying function!
Note: Please ensure you are having the exact size through precision caliper before buying
The packing may differ due to different lot of production.
Edge Thickness: 1.0mm to 1.2mm ( there might be ±0.1mm difference)
Please note that the middle height varies for each lot of production, if you have very strict request on the middle height( center height) or size tolerance, please be cautious to buy or contact us to ask.
Diameter Size: 17/17.5/18/...39.5/40mm( there might be ±0.05mm difference)
1 piece per order
Package included
: 1  piece