Amazon.com : NEJE A40640Ⅱ Laser Module, 10W+ Output Power, FAC Tech - 2 x Beam, Built in High Pressure Air Assist, Come with Metal Nozzle, Compatible with Laser Engraver and Cutter :
NEJE Max 4 A40640 Laser Engraver, 12W Zoom Output, Auto Air-Assist, 0.001mm Drive Accuracy, 750mm/s, 4-Axis, 750*460mm - GEEKMAXI.COM
Neje 10w N30610 Professional Laser Module Kit 450nm Blue Light With Ttl Pwm Modulation For Diy Cnc Laser Cutting Machine Wood - Woodworking Machinery Parts - AliExpress