Uniform and Focusable 445nm Blue Line Laser Module, Blue Laser Line Generators | Berlinlasers
405nm Blue/Violet Dot Laser Module 500mw Diode Laser DC 12V/ Fan Cooling & TTL 1-20K Hz & Long Time Working: Amazon.com: Industrial & Scientific
Industrial Blue Lasers 445nm 447nm 450nm 50mw Dot Diode Module w/Driver Out and TTL & Fan Cooling: Amazon.com: Industrial & Scientific
4W Industry Laser 445nm/447nm/450nm 4000mW Blue Laser Dot Module Diode NDB7A75 w/ TTL0-20kHz & Fan Cooling & Long Time Working: Amazon.com: Industrial & Scientific
60mW Compact 488nm Direct Diode Blue Laser Module with TTL Modulation A-B60F - OdicForce
High power 1.5W~2W 445nm Blue Laser Module Osram with TTL modulation