Fuliko Si Silver-Plated CO2 Mirror — 20mm Dia x 3mm Thick (0.79" x 0.12"), 3PCS — 99.2%+ Reflectivity at 10600nm, Fits K40 to 400W Engravers

Overview: This pack contains three Fuliko silicon (Si) silver-plated flat mirrors designed for CO2 laser systems and lens/mirror replacements. Each mirror measures 20mm (0.79 inch) in diameter and has a 3mm (0.12 inch) thickness, supplying reliable spare components for engravers, K40 upgrades, and other CO2 applications. Optical performance: These mirrors are engineered for infrared CO2 lasers and deliver over 99.2% reflectivity at the key 10600nm wavelength, helping to minimize transmission losses from the laser tube to the workbed and maintain peak cutting and engraving performance. Durability and efficiency: The flat 20 mm design and silver-plated silicon surface provide stable reflectivity and long service life. They are built to improve consistency and working efficiency across repeated runs, supporting accurate marking and engraving results. Compatibility: Suitable for a wide range of CO2 equipment — from K40 hobby machines to mid- and higher-power systems. These mirrors work with machines rated from 60W to 400W and are also compatible with many cutters, etchers, and up to 300W industrial engraving setups. What’s included: 3 pieces of 20mm silicon mirrors (0.79 inch diameter, 3mm / 0.12 inch thick) ready for installation in CO2 laser mirror mounts and optical trains.