All Metal MK8 Extruder, 3D Printer Extruders Hotend Kit with 0.4 mm Nozzle Print Head for MakerBot Prusa i3 Reprap 3D Printer 1.75mm Filament Supported

Assembled mk8 extruder come with 4 print nozzles; Diameter: 0.4mm defaulted; 0.2mm, 0.3mm, 0.5mm optional.
It is compatible with most prusa i3 3d printers with some slight modifications when mounting it.
Filament size: 1.75mm PLA/ABS or other 3d print materials. Flow rate of nozzle:max 100mm/s, support for high speed printing.
Nema 17 high quality stepper motor with larger torque and less heat buildup.
Special ceramic insulation cotton ensure the hotend can heat to a high temperature fast and stably.