MCWlaser PVD ZnSe Laser Lens Focus Lens For CO2 Laser Engraver Cutting Machine. GaAs Lens Co2 Laser Engraver Cutter D: 18 19 20 mm FL: 1" 1.5" 2" 2.5" 3" 4". 3pcs MCWlaser CO2 Si/Mo Mirror Dia: 25/20mm For CO2 Laser 40W -150W Gold Coating.
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