1. This kit is upgraded to a completely new design version, which can directly replace the hot end for Bb Lab X1/X1 Carbon/P1P models, and can be used with other DIY designs. The heating block has been upgraded to chrome zirconium copper nickel electroplating treatment, with high temperature resistance of 500 degrees Celsius printing and fast thermal conductivity. 2. The anode black radiator and bimetallic insulated titanium alloy throat are fixed and locked with M3 top wire, which is easy to install, stable to connect, and can be disassembled and replaced, reducing the cost of use. 3. All metal smooth insulation, composed of bimetallic copper and titanium alloy insulation sections, provides better heat dissipation effect. The throat is closely integrated with the heating block, and the structure of the throat has been upgraded. A step limit has been added at the fitting point with the heating block, reducing the phenomenon of material leakage and detachment. 4. The roughness of the inner wall of the throat and nozzle is Ra0.4, reducing blockage and improving printing quality. The connection between the heating block and the radiator is upgraded to two titanium alloy screws for fixation, avoiding the bending and breaking of the throat during high-speed printing. At the same time, titanium alloy has better insulation effect and increases stability. 5. Packaging: 1 set of hardened steel nozzles with a diameter of 0.4MM, and 1 high flow 3-hole nozzle as a spare part. The picture content shows the shipped accessories. (excluding thermosensitive ceramic accessories) Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:hardened steel Package Contents: 1 x Hotend Kit Only the above package content, other products are not included. Note: Light reflection 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.