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Cross Laser Diode - 5mW 650nm Red : ID 1058 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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5pcs/lot 5v Laser Diode 650nm 5mw Red Dot Diode Laser Head, Red Laser Diodes Module Red Sight Copper Head Mini Laser Pointer - Diodes - AliExpress
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445-450nm High Power 1.6W 1600mw Blue Laser Diode Dot Module / w18x45mm & 6.7-7.5V: Amazon.com: Industrial & Scientific
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