Snapmaker 40W Laser Module with Air Assist,Snapmaker 40W Laser Module with Air Assist for Snapmaker 2.0 A350T/A350/A250T/A250/F350/F250 3D Printer (40W Laser Module): Amazon.com: Industrial & Scientific,Snapmaker 40W Laser Module with Air Assist,Snapmaker 20W & 40W Laser Module With Air Assist - Snapmaker US,Snapmaker Ray 40W Laser Engraver and Cutter with Air Assist