This is an upgrade kit of V6 full assembled with Heater, Thermister, Nozzle 4mm, Metal Bowden, Fan with Holder, PTFE Tube, cables for connection, it is almost Plug and Play!What you Get:1x E3D J-Head V6 for 1.75mm filament1 x Heat-bed with heater 12V 40W and 100K NTC thermistor1 x Extruder Pipe with..