5pcs Adjusted 12x30mm 3.8mm Laser Diode Housing Host Case with Collimating Lens

5pcs 12x30mm Laser Housing w/ 200-1100nm Lens For 3.8mm Diode. With 200-1100nm Focusable Collimating Lens! 5x 12x30mm 3.8mm Housing w/ Lens. For 3.8mm laser diode. Lens: plastic lens.

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