NEJE 20W Laser Module Head Kits 450nm/405nm Blue Light TTL Adjustable Focus for CNC Laser Cutter Engraver Suitable for 2/3/4PIN - AliExpress
NEJE 20W Engraving Machine,5.5W Output Power, Mini Engraving Machine,Upgrade 32-Bit Motherboard,Working Area 170X170mm, Best Cutting Material for Logo/Wood/Paper/Plastic/Leather/Aluminum,etc : Amazon.ca: Industrial & Scientific