3PCS Geekcreit?® 0.4mm V6 1.75mm Long Distance Metal Extruder Nozzle With Cooling Fan Set for 3D Printer 3Dpen but you might also need

but you might also need additional screws to mount heatsink with fan

The precise brass nozzle ensures accurate extrusion

XYZ module

following the step of the trend

3PCS Geekcreit?® 0.4mm V6 1.75mm Long Distance Metal Extruder Nozzle With Cooling Fan Set for 3D Printer 3Dpen but you might also needThe upgrade advantage: 1, Reduce the radiator length, thickness and diameter (shorter lengths help to increase the stability of the hot end), while increasing the number of heat sink, making the heat end while reducing weight, have better thermal performance and stability . 2, Change the bulky external rotation pneumatic fittings for the catheter cards further reduce weight and reduce the hot end length, but also to the feed deeper, feeding more