CNCOLETECH CO2 Laser Lens Dia:15mm FL:2 or 50.8mm Laser Mirror CVD ZnSe Focus Focal Lens for CO2 Laser Engraving Cutting Engraver/Cutter 40W-200W

Good quality but is cheaper in Walmart. Com

Works great with BOSS lasers.

Muy buena calidad precio ,la mejor elección recomendado

Great for big laser machine

Seriously great buy! I was paying a pretty ridiculous price for the same exact product until I found these! You will not be disappointed!! I’ve bought several and all have been A+

Good quality but is cheaper in Walmart. Com

Replaced original lens in 40w laser cutter and was able to use less power to cut through wood.

This lense is so much better than the stock k40 and the difference was exceptional

smaller than others I have ordered but still worked

Good