Real 2000mw/2w 445nm 450nm Focusable Blue Laser Module Diode High Power Laser Cutting Engraving Machine Tt L Diy Cnc Adjust - Professional Lighting - AliExpress
Blue High Power Laser Module
Nichia NDB7875 - 2W Blue Laser Diode - 445nm-450nm 9mm/TO-5 Engraving & Burning | eBay