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Amazon.com: HiLetgo 10pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm : Industrial & Scientific
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GeeBat 10pcs Mini Laser Dot Diode Module Head Red 650nm 6mm 5V 5mW Diode Lasers: Amazon.com: Industrial & Scientific
GeeBat 10pcs Mini Laser Dot Diode Module Head Red 650nm 6mm 5V 5mW Diode Lasers: Amazon.com: Industrial & Scientific
Red Dot Laser Diode Class IIIA: 3mW/ 650nm [CP-TIM-230-3-3D-650] - $31.90 : Calpac Lasers Diode Modules Pointers and Levels, 20 years of experience specializing in industrial and promotional laser diode applications