1、[Optimal Design of Throat] Optimized design of throat, equipped with PTFE tube, the wire is uniform and glossy, reducing heat conduction, can achieve lower thermal conductivity meanwhile, and reduce the heat loss of the heating block. Meanwhile, it can accelerate the transfer of its own heat to the radiation, which greatly guarantees the stability of the product. 2、[Brass Nozzle] International standard brass nozzle, using international high quality brass nozzle and optimized runner design. The inner wall is glossy and flat, and the contact appearance is flat. There is almost no clogging problem, and the wire is uniform and glossy. 3、[Pluggable] The heating tube and temperature thermistor taken out of the control box, connect them to the terminal shell and pins. Then you can insert the hot end kit, which makes it easier to replace the hot end kit. 4、[Thermistor] Hot end kit for MK8 extruder, white wire is temperature thermistor, plaited wire is heating tube 24V 40W. Nozzle tip, aluminum heating block, throat (inbuilt PTFE). 5、[Silica Gel Cover] Provide a silicone cover to help keep the temperature of the hot end more stable, which will result in higher print quality and consistency. Suitable for printers such as for Ender3, for TEVO typhon and for ANET E12.