Compatible 3D Printers: This extruder hotend replacement is only compatible with Anycubic Kobra S1 Combo 3D printers, not for other 3D printer models. Please confirm your 3D printer model before ordering. Easy Installation: Compact form factor; the heater block, heatbreak, and 0.4mm nozzle feature a modular design, eliminating the need for wiring and stripping work. This assembled printhead hotend is easy to install on Kobra S1 Combo 3D printers. High Quality 3D Printer Accessories: Includes an assembled hotend kit with high-precision nozzle, throat tube, heater block, thermistor, and heater cartridge for smoother printing and improved print quality. Support High Speed Printing: The semi-assembled hotend features an all-metal throat design that promotes even heating and smooth filament flow, supporting high-speed printing. Designed and tested rigorously to prevent leaks and clogs, enabling a reliable 3D printing experience. Warm Note: We recommend checking that all parts are securely tightened before use, as the assembled hotend may loosen during transportation. After installation, re-level the heated bed. It is not recommended to replace the nozzle on this hotend. Due to different production batches, there may be variations in product appearance and printed text; these do not affect functionality. Specification: 2 Pieces Color: As shown Material: Hardened steel + silicone + plastic + metal Package Contents: 2 x Hardened Steel Nozzle Hotend Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.