This lens is 100% made in the USA
Diameter: .787" (20mm)
Edge Thickness: .080" (2mm)
Product Specifications:
Anti-reflective coated lens for <200W.
Type: Meniscus Laser Focal Lens
Material: Znse Laser Grade(made in the USA)
Coating: 10.6um (AR Both Side)
Diameter Tolerance: +0/-0.13mm
Center Thickness Tolerance: ± 0.1mm
Focal Length Tolerance: <1%
Clear Aperture: >= 90% Diameter
Scratch/Dig: 40-20