5pcs 40 5-G-2 Coated Glass Focusing Lens for 405nm 450nm Blue Laser Diodes w Holder M9 0.5. 5pcs 405-G-2 Coated Glass Focusing Lens for 405nm 450nm Blue Laser Diodes w Holder M9 0.5. They are collimating lens for blue laser diodes, can be used for NDB7875/NDB777 laser diodes.
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