Upgrade your 3D printer with this FlowTech hotend kit. This kit comes with a plug-and-play heater core, thermistor and heatsink. The all-metal design is of high quality and will last a long time. In addition, the maximum temperature is 300˚C and most 3D filaments can be used without any problems. This hotend is suitable for the Neptune 4 and Neptune 4 Pro 3D printers from Elegoo.