20mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:2 in. (50.8 mm) Replace all your engraver’s used

Replace all your engraver’s used mirrors in one go with this 3 pack of Si mirrors and your engraving work will be easier than ever before

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20mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:2 in. (50.8 mm) Replace all your engraver’s usedCompatible Machines: AF2440; AF4063; AF3555; AF5070; ZF3551 Cutting Edge Features: HIGH QUALITY CVD ZnSe: OMTech's powerful focus lenses are manufactured from premium zinc selenium via chemical vapor deposition for superior optical properties. HIGH TRANSMITTANCE: Both sides of each lens are covered with strongly antireflective coatings to achieve at least 99. 5% transmittance rate for infrared light at a wavelength of 10. 6 microns. LASTING