520nm 10mw 30mw 80mw 135mw Green Laser Line Generator Alignment Diode Module For Stone Wood Cutting Low Working Temp - Stage Lighting Effect - AliExpress
Amazon.com: CNC 24V blue laser module for laser engraving and cutting machine 24V with PWM/TTL can cut 3mm balsa wood can engrave stainless steel (33×33×70mm) : Arts, Crafts & Sewing
635nm 10mW Red Dot Line Cross Focusable 5V Laser Diode Module Long-time Working | eBay
24V 1mW 650nm Red Dot laser module positioning laser transmitting tube industry