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

Taille : Dia.12mm FL:50.8mm/2 commande

Not a good discription

12mm lense is head and shoulders above the one that came in my k40.

Works great with BOSS lasers.

The product description claims this is 2.2-2.3 mm thick, however it is much thicker, like 3.2mm, which is a problem for mounting in a Universal laser cutter. I can sort of make it work by adjusting some things on the whole lens holder assembly, but thats not the greatest solution for my situation, since I run a space with 6 lasers that are used by hundreds of people and its possible the lens assemblies can get swapped. As far as the lens function, it seems to cut great, so I would give that aspect 5 stars, especially for the price. However the thickness is really a problem, and it would be fine if they accurately stated the thickness in the description, but the fact that the description is just wrong is hard to get over. In the image Ive attached, an original Universal lens is on the right, and this replacement lens is on the left, so you can see the difference in thickness.

Would definitely buy again!

Quality product. Far superior to lens supplied with K40. Certainly made a vast improvement on cutting and reducing burn.

Great for big laser machine

Yeah this is not 12mm and therefore unusable junk.

Would have given it 5 stars but it filters out red laser pointer, other than that it seems to be doing ok.