ABOUT THIS PRODUCT:
This product is 100% made in the USA.
Focal length:101.6mm(4.0")
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