Amazon.com: DIYmall Laser Head Diode Dot Module WL Red Mini 650nm 6mm 3V 5mW 10PCS : Industrial & Scientific
Amazon.com: Laser Engraver Cutting Module, ANNOYTOOLS 10W Output Optical Power Diode Laser Head, Double Ultra-Fine Compressed Spot Laser Cutter Module with Air Assistance, Laser Engraver for Wood and Metal