The Anycubic Kobra 3 Max Combo is a 3D printer featuring a large print volume and multicolour support. It can also store multiple filament spools at proper humidity to increase their shelf life.https://www.notebookcheck.net/Kobra-3-Max-Combo-3D-printer-with-multifilament-support-and-huge-print-volume-launched-with-massive-discount.933224.0.html
"The device supports 0.4 mm filaments by default"
0.4mm is the default nozzle size, not the filament size.