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
808nm 500mw Laser Diode 9.0mm to-5 LD High Quality Infrared IR Laser Diode Engraving Lasers: Amazon.com: Industrial & Scientific