405nm 300mw~500mw blue-violet laser diode module DC 5V 12V with cooling fan support
405nm 500mW Blue Violet Laser Diode Module Line Cross Adjustable Linewidth Customizable
FA02-500 405nm 500mW Blue Laser Module DC 12V Heat Sink Cooling Fan DIY Laser Engraver for EleksMaker _ - AliExpress Mobile
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High Power 450nm 500MW 1W 1.6W Blue Laser Diode (PLTB450B) - China 450nm 1600MW Laser Diode, Blue 5.6mm 450nm Laser Diode | Made-in-China.com
Wavespectrum Laser 405nm 500mW TO-can
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1500mW Levin Series Blue Laser Pointer, 445nm Portable Blue Laser - LaserTo
405nm 12V 500mw Blue Laser Module for DIY Laser Engraving Machine + TTL | eBay