Amazon.com: LASER TREE 40W(5W Output Optical Power) Laser Engraving Module, 450nm Laser Head for CNC Laser Engraver/Laser Cutter Machine, DIY Laser Engraving Tool Suitable for Wood Metal Acrylic Paper Etc
20W 40W Fixed Focus High Power Laser Module 450nm CNC Laser Cutting DI — Anet 3D Printer