This Kit is Upgraded, the heating block upgraded to copper material nickel plating treatment, high temperature resistance 500C degree printing, fast heat conduction. All Metal Design , TZ2.0 Print flow up to 35mm³/S. Heater block is connected with the radiator by two titanium alloy screws to advoid bending and breaking of the pipe during high-speed printing Upgrade heatbreak to be Bimetal heatbreak -TC4 Titanium alloy and Plated Copper to have better heat dissipation. Bigger size ,and not easy to be broken. The nozzle is connected by thread, and in contact with the bottom step of the heatbreak to completely solve the phenomenon of falling off and reduce the possibility of leakage. The removable nozzle can be replaced easily, Save time. Package: 1 set hotend as the first picture shows . Compatible with X1 series and P1 series 3D Printers The nozzle is connected by thread, and in contact with the bottom step of the heatbreak to completely solve the phenomenon of falling off and reduce the possibility of leakage. The removable nozzle can be replaced easily, Save time.