Laser Diode - 5mW 650nm Red : ID 1054 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Red Line Laser 635nm 5mW Φ5×15mm Small Size Laser Diode Module Line
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5mw 650nm Red Line Laser Module Focus Adjustable Laser Diode Head Industrial Diameter 12mm 5v Metal Glass Lens Head - Integrated Circuits - AliExpress
650nm 5mw Red Point / Line / Cross Laser Module Head Glass Lens Focusable Focus Adjustable Laser Diode Head Industrial Class - Woodworking Machinery Parts - AliExpress
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Amazon.com: 15pcs 5V 650NM 5Mw Red Dot Laser Head Red Laser Diode Laser Tube 6mm with Leads Head (15 PCS) : Industrial & Scientific