High quality 20mm ZnSe Focus lens (F50.8mm)

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High quality 20mm ZnSe focus lens for a CO2 laser

Type: Positive Meniscus Focus lens w/ imported material
Base: ZnSe
Focus: 50.8mm
Laser type: 10600nm CO2
Cutting: Good for 4mm acrylic and 10mm wood
Engraving: Very good
Suggest laser tube used: 40W or above