The Genuine Bambu Lab Hardened Steel Extruder Unit is a high-quality replacement part specifically designed for Bambu Lab X1 and X1C 3D printers. This extruder assembly is durable and reliable, ensuring smooth and accurate printing performance. With its hardened steel construction, this extruder unit is built to last and withstand the demands of continuous 3D printing. Compatible with both the X1 and X1C models, this Genuine Bambu Lab extruder unit is a essential component for maintaining the overall efficiency and quality of your 3D printer.