Laser tube type Co2 Glass sealed laser tube. M3050 mini Laser Engraving Machine use the smart design. 50w mini desktop co2 laser engraving machine laser cutter engraver w usb 3050 laser engraver m3050 500mm x 300mm (19.6x 11.8) with co2 laser tube. Working size (XY) 19.6x 11.8 (500mm x 300mm) with double side open door.