MK8 style extruder, 1.75mm filament, .4mm nozzle. You will need to extend the wires if you want to print on a larger machine.
This now includes the MicroSwiss all metal throat! No more replacing ptfe pieces and you can print up to 290C.
You will need to assemble it as shown here.
If you are using a ramps board you will need a driver to run it, HERE.
A print fan is also a good idea for PLA, Fans.
You will also need to add more power to the other half of control board on the (ramps board as shown here).
You can find the name brand E3D equivalent here, E3D Titan Aero.