20mm ZnSe Focus Lens for CO₂ Lasers – 10.6µm – High-Performance Replacement Lens

Love these lenses! My laser nozzles originally came with silicone/rubber rings that the lens would sit on in the nozzle. The rings didn't fit exactly so I had to work to make sure the lens would sit flat in the nozzle. These lenses with the ring around them make it so easy to change out...just drop in and good to go!

I had one sitting around from last year and never used. Then I needed a new lens and used . It was night and day better than my original lens. Kicking myself for not using earlier

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