0.6 / 0.8 mm is a high-strength and wear-resistant nozzle, suitable for printing carbon fiber filaments, glass fiber filament, wood filament, PLA galaxy, PLA multicolor, ASA sparkle, PLA sparkle.
0.25 mm==layer: 0.1 mm==high precision
0.4 mm==layer: 0.2 mm==standard
0.6 mm==layer: 0.2 / 0.3 mm==efficiency
0.8 mm==layer: 0.3 / 0.4 mm==more efficiency