Amazon.com: 450nm 20W Laser Module, 4W Optical Power Engraving Module, Adjustable Focal, Blue Laser Head for Laser Machine DIY Laser Engraver Wood Paper Leather
Quarton Direct Green Straight Line Laser Module VLM-520-55 LPO (Non-DPSS Green Line Laser Module: Operating Temperature Range : -4 °F ~ 140 °F): Amazon.com: Industrial & Scientific
Industry/Lab RGB White Synthetic Laser Reflect Red Green Blue Laser Module 600mw 12V TTL Full-Color Laser Module: Amazon.com: Industrial & Scientific
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12V Mini Laser 250mw White RGB Laser Dot Module & 5V TTL Control Colorful Laser Module: Amazon.com: Industrial & Scientific
Amazon.com: 1000mw Adjustable High Power Laser Green Dot Module 520nm 1W with Adapter/DIY 3D Print Laser Engraving : Arts, Crafts & Sewing
Amazon.com: LASER TREE 7.5W Engraver Module, 450nm Output Blue Light PWM TTL Cutter, Adjustable Focus Laser Module, Compatible with Laser Engraver Machine