Cheap And Discounts USA CVD ZnSe CO2 Laser Focus Lens Dia.12 15 18 19.05 20mm FL38.1 50.8 63.5 76.2 101.6 127mm for Laser Engraving Cutting Machine Wholesale. Buy Directly From Merchant SCIENODE Laser Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.