Geeetech MK8 reprap 3d printer extruder e3d nozzle 0.3/0.35/0.4/0.5mm 1.75/3mm filament for kossel Nozzle diameter: 0.3mm,0.35mm,0.4mm, 0.5mm optional Feed inlet diameter : 1.75mm 3mm diameter PLA/ABS Filament optional The flow rate of Nozzle: about 24cc / h Sports shaft speed:40mm/s Thermistor: 100K NTC