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
650nm 660nm Adjusted Red Laser Line Dot Cross Laser Diode Module 3V-5.5V 100mW Laser Dot/Line/Cross Module Focusable 13mmx42mm with US Power Adapter and Heatsink: Amazon.com: Industrial & Scientific
WOWOONE Laser Diode, 30pcs Mini Red Laser Diode Laser, 5V 650nm 5mW, Red Dot Laser Head, with Leads Head Outer Diameter 6mm: Amazon.com: Industrial & Scientific
1500mw High Power Laser Module 445/450nm 1.5W Blue Diode Dot Laser 12V/Adapter & 22x90mm: Amazon.com: Industrial & Scientific