【High quality Material】High quality Laser Lens use ZnSe cystal material, resistant to high temperature, excellent optical properties，up to 180W CO2 laser resistance.
【High Transmittance】Znse Lens both sides strongly antireflective coating achieve a 99.9% Laser Transmittance rate, 10% Higher Work Efficiency.
【Lasting Durability】This focus lens with superb double-sided solid coating, wiping resistance, longer working life.
【Wide Compatibility】This 20mm laser focus lens can be used in your30w-180w CO2 laser engraving and cutting machine for more accurate and efficient production.
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