Upgrade your 3D printer with this FlowTech hotend kit. This kit comes with a plug-and-play heater core and thermistor, so no additional firmware modifications are required. It also comes with a CR touch spacer and a custom part cooling fan duct. The all-metal design allows for printing with most filaments. The nozzle is leak-proof and easy to change. This hotend is compatible with the Ender 3 V3 SE 3D printer from Creality.