[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]: Includes 1 assembled hotend kit with precision components such as a nozzle, throat tube, heater block, thermistor, and heater cartridge. These parts ensure smooth filament flow and improved print quality. [Support High Speed Printing]: The semi-assembled all-metal hotend features an optimized design for even heating and consistent filament extrusion, supporting high-speed printing. Engineered by a professional team, this hotend resists clogs and leaks, providing reliable performance for 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. Avoid replacing the nozzle on this hotend to maintain optimal functionality. Color: As Shown 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. Note: Slight color variations due to lighting and display settings may occur. These differences do not affect product performance. Measurement tolerance: +/- 1-3 cm.