Usage: The extruder assembly is a perfect replacement accessory for 3D printer. Nozzle Model: The nozzle size is 0.4mm/0.02inch, for 1.75mm/0.07inch filament. Use: White wire is temperature thermistor, red wire is heating tube 24V 40W. Easy to replace: The assembly kit includes tip of the nozzle, aluminum heating block, throat pipe. Silicone case: Keep print end clean, increase of service life. Nozzle material: Brass; Extruder material: Aluminum alloy. The length of PTFE hose is 34cm/13.4inch. Aluminum block is about 2x2x1cm/0.8x0.8x0.4inch. Fit for Ender 3, Ender 3 Pro etc. Heating Tube 24V 40W Type Extruder Assembly To Fit 3D Printer Compatible Model Does not apply Manufacturer Warranty Does not apply Custom Bundle No Country/Region of .