This A1 assembly kit is compatible with Bambu Lab A1/A1 mini 3D printers and extruder. The silicone sock for the printer's hot end is flexible, easy to install, stable and not easy to fall off, and not easily deformed during long-term use. The nozzle assembly is CNC machined with high precision, and the inner surface of the nozzle is smooth and burr-free, allowing consumables to pass through more smoothly and printing more accurately. The upgraded Bambu Lab nozzles are made of high-quality hardened steel, removable, and available in multiple sizes. Its sturdy construction ensures excellent resistance to abrasion, heat and corrosion, making it perfect for 3D printing. The A1/A1 Mini heating component with a magnetic block, can quickly and accurately fix the hotend to the installation position, making it easy and convenient to remove and Install the hotend. Features: Color: Black. Dimensions: See picture. Nozzle Specification: 0.2mm/0.4mm/0.6mm/0.8mm. Applicable Consumables Diameter: