Place of Origin: China
Model Number: YT-220
Material: optical glass
Diameter: 3-250mm
Diameter Tolerance: +/-0.1mm
thickness: 0.5-20mm
Thickness Tolerance: +0/-0.1mm
Polish: 2 sides
Surface Quality: 60/40
Bevel: within 0.3mm
Coating: as customer's requirements
Application: For Optical Instruments