Compatible 3D Printers: This extruder hot end assembly is only compatible with the Anycubic Kobra S1 Combo 3D printer and is not compatible with other 3D printer models. Please confirm your 3D printer model before ordering. Easy Installation: The compact design and modular design of the heating block, heat break tube, and 0.4mm nozzle eliminate the need for wiring and stripping. Therefore, this pre-assembled print head hot end assembly is very easy to install on the Kobra S1 Combo 3D printer. High-Quality 3D Printer Accessories: Includes the pre-assembled hot end assembly: high-precision nozzle, throat, heating block thermistor, and heating rod, allowing for smoother prints and higher quality 3D printed models. Supports High-Speed Printing: The semi-assembled hot end features an all-metal throat design, ensuring even heating of the print head and smooth filament flow in the throat and nozzle, thereby supporting high-speed printing. Built with a rigorous design and testing team, it is leak-free and clog-free, allowing you to easily embark on your 3D printing journey. Warm Reminder: We recommend checking that each part is tightened before use, as the pre-assembled hot end kit may loosen during transport. After installing this hot end print head kit, it is recommended that you reset the heated bed. Changing nozzles on this hot end is not recommended. The appearance and printed text of the product may vary slightly between different batches, but this does not affect use. Specifications: 2-pack Color: As shown Material: Hardened steel + silicone + plastic + metal Package Contents: 2 x Hot ends with hardened steel nozzle The above only includes the package contents and does not include other products. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement tolerance is +/- 1-3 cm.