18mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:1.5 in. (38.1 mm) being compatible with most CO2

being compatible with most CO2 engraving heads

DIGITAL DISPLAY: Internal sensors constantly monitor water flow and temperature

Engrave laser masterpieces on bottles

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18mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:1.5 in. (38.1 mm) being compatible with most CO2Cutting 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 DURABILITY: Our laser engraver focus lenses' double sided coating