Nozzle size: 0.2mm, 0.4mm, 0.6mm. 0.8mm, Filament size: 3.0mm; Material: Brass; thread: M6 ; Nozzle size with dot: 0.2 (0.2 number); 0.4(3 dots Or 0.4 number); 0.6(4 dots Or 0.6 Number); 0.8 (5 dots Or 0.8 number)