3x K9 Mirrors 18mm 19mm 20mm + Znse Focus Lens for CO2 Laser Engraver Cutter

New 3X20mm K9 Mirror + 1X19mm Znse Lens for CO2 Laser Engraver Cutter FL: 1"-4". Lens Mateial: Znse. Work perfect with 30W-40W CO2 laser engraver cutter. Mirror Mateial: K9 coated gold. Lens ET: 2.5mm.

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