[Compatible 3D Printers]: This 2pcs extruder hotend replacement kit is designed exclusively for Anycubic Kobra S1 and Kobra S1 Combo FDM 3D printers. It is not compatible with other 3D printer models. Please verify your printer model before purchasing. [High Quality 3D Printer Accessories]: Each kit includes a fully assembled hotend with precision components such as a high-precision nozzle, throat tube, heater block, thermistor, and heater cartridge. These parts ensure smooth filament flow and improved print quality for consistent, reliable performance. [Support High Speed Printing]: The semi-assembled all-metal hotend features an optimized design for even heating and efficient heat transfer. This enables stable extrusion at high speeds, reduces the risk of clogs and leaks, and supports a seamless 3D printing experience. [Warm Note]: Please check that all components are securely tightened before use, as parts may loosen during shipping. After installation, it is recommended to re-level the print bed. Do not attempt to replace the nozzle on this hotend. Colour: As shown in picture Material: Brass Package Contents: 2 x 3D Printer Hot End Kit Note: The package includes only the items listed above. Other accessories are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by up to +/- 1-3 cm.