The nozzle size is marked with Dot' s quantity, 0.6 (4 dots), 0.8 mm (5dots)
Nozzle size: 0.6 mm, 0.8 mm
including 2 pieces 0.6 mm and 2pieces 0.8 mm, for 1.75 mm filament use
The nozzle is made from Hardened steel nozzle, black surface treatment.