1. It is a for bambu labs complete hotend without hotend cooling fan and retaining clip, the assembled hotend with hardened steel 0.4mm nozzle, the ceramic heater and thermistor a silicone cover a wrench and a thermal grease are included. 2. The for p1p hotend is compatible with P1 Series 3D printers but not X1 Series as the ceramic heaters and thermistors for them are different for them. 3. The heat sink, throat, heat block and the removable hardened steel 0.4mm nozzle are assembled, you only need to assemble the ceramic heater and thermistor or keep them for later use. 4. The hardened steel 0.4mm nozzle is removable, you can remove the nozzle the nozzle with just a wrench no need to grab the heat sink, it is a great choice if you often change the nozzle. 5. Please heat up the for bambu labs hotend to about 260℃ when changing the nozzle, it helps you to prevent it from leaking, please of your hand. Colour:Black Material:Hardened Steel Package Contents: 1 x 3d printer extruder Only