Features: The magnetic block on the A1 Mini hot end heating component allows for quick and accurate nozzle positioning, making nozzle installation and removal simple and convenient. Before replacement, ensure the hot end has cooled down completely to avoid burns from the heated components. The 0.4mm nozzle is the standard diameter for modern 3D printers, offering an effective balance between print quality and speed. The A1 Mini 3D printer is designed to use a 0.4mm nozzle. Quick nozzle replacement enables the use of multiple durable and precise extrusion sizes. Warning: Do not use a 0.2mm nozzle with filaments containing carbon fiber, glass fiber, metal, or other inorganic particles, as this may lead to clogging. Specifications: Material: Metal Nozzle Size: approximately 0.2mm, 0.4mm, 0.6mm Quantity: 1 piece Compatible with Bambu Lab A1 Mini Note: Due to lighting effects and shooting angles, there may be slight color or appearance variations. A 1cm measurement deviation may occur due to manual measurement. Package Includes: 1 piece Hot-end Nozzle Kit