Nichia Laser Diode 520nm 100mW Green Laser Module Diode
520nm Direct Green Laser Module, VLM-520-51 LPT | Quarton - INFINITER.com
High Power 520nm-80 Green Dot Laser Diode Module with Cooling Fan for Clothes Cutting/Wood Cutting/Mechanical Positioning (Laser Module + Adapter + Bracket): Amazon.com: Industrial & Scientific