Focusable Waterproof 450nm Blue Laser Module 450T-5000 | eBay
16W 450nm Fiber Coupled Laser Diode Module
High Power 450nm 1.6W 1600MW Laser Module for Cutting Engraving - China 450nm 1.6W Laser Module, Blue 1.6W Laser Module | Made-in-China.com
450nm 80mW Blue Dot Laser Module dc5v 12*15mm - AliExpress
Mini Size 450nm 5MW Blue DOT Laser Diode Module for Toy Gun - China Laser Module, Laser Module 450nm 5MW | Made-in-China.com
Laser Module Head 450nm Blue for Engraving Machine Cutting 80W : High Power Burning Laser Pointers,DPSS Laser Diode LD Modules, Kinds of laser products