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532MD-30 532nm 1mW 4.2-5VDC Green Laser Dot Diode Module with TTL Class 2: Amazon.com: Industrial & Scientific
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Amazon.com: MakerFocus 20pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm : Industrial & Scientific