Features: Perfect compatibility: The hot end kit specifically for Ender-3 S1 ensures seamlessly integration with this original model for easy and convenient installation. Efficient Extrusion Performances: Optimised extrusion mechanism improves the efficiency of materials melting and feeding, reduces clogging and improves printing smoothness. High Temperature Resistant Design: high temperature resistant materials, it is able to work stably in high temperature environment, ensuring long time use. Easy Maintenance: easy for users to clean and replace, enhancing the convenience of daily maintenance. High thermal resistance material: Using high thermal conductivity material ensures even heat distribution, improves heating efficiency and speeds up print preparation time. Specifications: Item：3D Printer Extruder Hotend Kit Material: Plastic + Metal Size: Mixed as shown For Ender-3 S1 Package Includes: 1Set Extruder Hotend Kit note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.