Official Creality 3D extruder kit for the Creality Ender-3 S1. Replace your extruder with this kit if it has a defect. This extruder kit from Creality is suitable for the following printer models: CR-200B Pro, Ender-3 S1, Ender-5 S1, Sermoon V1, Sermoon V1 Pro, Sermoon V2 and the Sermoon D3.