LEORX 3D Printer Head 0.4mm MK8 Thermistor Extruder with 0.2 and 0.3mm Nozzle Nozzle flow rate: about 24cc h. Movement shaft speed: 10-100mms. Normal working temperature: 190c-250c. The maximum temperature: 280 c. Extrusion nozzle : 0.2mm, 0.3 mm, 0.4 mm.