ATOMSTACK MR20 20W Infrared Laser Module 1064nm Laser for Engraving Metal and Plastic1. The world's first consumer grade optical power 20W 1064nm wavelength Atomstack MR20 20W laser module, no competing products, suitable for fine marking of all common metals and plastics. It can quickly cut 0. 2mm aluminum sheet at one time. 2. It is suitable for all frame structure engraving machines of atomstack. 3. 20W high power high frequency pulse laser, which can deeply engrave materials and emboss stone materials. 4. Using optical fiber