445nm 2500mW 2.5 W Blue Laser Module with towers DIY Laser Engraver Cutter : Amazon.de: Computer & Accessories
High Power 2.5W 445nm 450nm Blue Laser Module 2500mW DIY Engraver free Goggles | eBay
445nm 2500mW 2.5W Blue Laser Module With Heatsink For DIY Laser Engraver Machine | eBay
Fb03 2500mw 445nm 12v Blue Laser Module 2.54-3p Ttl/pwm Modulation For Laser Engraver Can Control Laser Power Focusable Gktools - Woodworking Machinery Parts - AliExpress
2.5W, 5.5W or 7W high power 445nm wavelength TTL PWM Control blue Laser Module - RobotDigg