MK8 Extruder 0.4mm Nozzle 1.75mm Filament Kit J-head Extrusion Hotend Head 3D Printers Parts With Motor Throat  Aluminum Part.
This extruder matches the double nozzle fittings, Suitable for open source, MAKERBOT, Founding morality, diy..series,

Specifications:
Material: Aluminum
Fan Voltage: 12V
Extrusion nozzle:  0.4mm Diameter
Movement Axis Speed: 10-100mm
Nozzle velocity: Support for 100mm/ high speed printing
Weight: 482g

What's included:
1 x MK8 Extruder Head Kit

Note: Heating nozzle 12V, normal working temperature 190°-250°, Set temperature not to exceed 280 °, High temperature can easily damage high temperature resistant materials !!