50mW 445nm 450nm Adjustable Blue Laser Dot Module w/ Aluminum Heatsink & Long Time Working: Amazon.com: Industrial & Scientific
NDB7875 Diode 450nm 445nm 100mw Adjusated Blue Laser Dot Module w/12V TTL Modulation & Long Time Working: Amazon.com: Industrial & Scientific
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445nm 450nm Blue Line Light Module Line Generator Projector Diode for Laser Swamp Pond Halloween Haunted House Laser Lighting Effects 1668: 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