The use of high-quality friction seat PTFE tube, has good high temperature resistance and lubricity, making printing more accurate Full metal J-Head V6 back-end kit working temperature range: -40~+260 Celsius (-40~+500 Fahrenheit), voltage is 24V40W, materials are aluminum, stainless steel and brass Ender 3 with aluminum heating block comes with a spare kit to prevent installation failure; 3 silicone caps and 3 nozzles; white wire is temperature thermistor; braided wire is heating tube The assembled thermal kit is very easy to install. Connect the heating tube and temperature thermistor to the junction box and pins, and then insert the patch kit The highest temperature of the high-quality thermistor and heating tube reaches 260 degrees Celsius, with good stability and rapid heating. The heating block has an insulating silicone sleeve, which can ensure that the temperature of the printer is more stable during operation, and the printing is more uniform and fast for fixed phone models. The brass nozzle of the printer is smooth inside, which can effectively prevent the print head from leaking. It is an perfect printer replacement nozzle. Operating temperature range: -40~+260 Celsius (-40~+500 Fahrenheit) Working voltage: 24V 40W Colour:Red + Black Material:Aluminum + stainless steel + brass Package contents: 1 * Hot end kit 3 * Silicone cover 3 * 0.4mm Printer nozzle Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.