Specifications:

• Wavelength: 254nm
• Thickness: 2mm
• Surface: 60/40 no bubbles no hairlines
• Size: 20mm
• Shape: Round
• Sample: Can offer for test
• Polishing: Both two sides
• Packing: Carton
• Origin: CN(Origin)
• Notice: before pay pls let me know
• Color: Black
• Use: uv lamp ,detector,ultraviolet light filter
• Tolerance: + -0.05mm
• Model Number: ZWB3
• Material: optical glass
• Edge: Protection chamfer