XCSOURCE Quicker Assembled Metal J-Head Hot End Kit V6 3mm For Nozzle Printer Head Direct Feed Extruder(Short Distance) TE431 Thermistor installed within the copper sleeve, making it more accurate temperature control on this all-metal printer head. All metal enables up to 300 degrees Celsius and with future materials that requirehigher working temperatures beyond those supported by plastic extruders and hot end. This creates problems of balance and oscillations with faster motion which you can see in your printing results and hear and feel when your machine is shaking. After improvement by our technical personnel, the unique design of these J-head go Hotend is better than before.Currently, the most popular 3D printer elements. Easy No-Solder, No-Tape, No-Adhesive assembly and maintenance with Smaller - Easier - Higher Performance when using.