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
Class Ⅱ 6mm 520nm 1mw Small Size Green Laser Module Point Laser Module Class II Safety Laser - Amazon.com