NEJE 20W Laser Module CNC Laser Cutting/Engraving Machine 450nm Blue Light With TTL / PWM Modulation for CNC DIY|Woodworking Machinery Parts| - AliExpress
3080-20w TTL Violet Laser Module Laser Tube Kit Laser Engraving Machine Parts Module for NEJE MASTER Machines – BeamQus
NEJE 3 N30820 Laser Engraver, 5.5-7.5w Output Power DIY Laser Engraver and Cutter Machine Support LightBurn, 0.08mm Ultra-Fine Focus, for Acrylic Wood and Glass ,170 x 170 mm(6.7"x6.7")