20mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:2 in. (50.8 mm) Low Power 10–40% = 7

Low Power 10–40% = 7

Its emergency button promptly cuts off power when things go awry

Tool steel

6-micron wavelength

20mm CVD ZnSe Focal Focus Lens for Laser Engraver Cutter Focal Length:2 in. (50.8 mm) Low Power 10–40% = 7Compatible 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