532nm Green Focus Line Positioning Laser Diode Module Locator 5V Adapter Adjustable Holder (with Adapter + Holder) - - Amazon.com
Amazon.com: SCULPFUN S9 Laser Engraver, Full-Metal CNC Laser Engraving Machine with 5.5W High Precision 0.06mm Ultra-Thin Beam Diode Laser Cutter for Wood, Leather, Acrylic, Large Engraving Area 410x420mm
520nm 50mw Line Green Marker Laser Diode Module for Wood Stone Cutting | eBay
520nm 30mw Green Line Machine Stone Wood Cutting Locator Laser Diode Module 908736601822 | eBay
Amazon.com: 130W Laser Engraver Module,20W Optical Power Diode Laser Module Kit for Engraver Cutter,Laser Engraving for Wood and Metal,Fixed-Focus Laser for Acrylic/Wood Cutting,Support Air Assist Laser Cutting
High Power 520nm-80 Green Dot Laser Diode Module with Cooling Fan for Clothes Cutting/Wood Cutting/Mechanical Positioning (Laser Module + Adapter + Bracket): Amazon.com: Industrial & Scientific