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Specifications:Nozzle Diameter: 0.4mmDimensions: 49mm x 16.5mm x 21mmMaterial: High-Quality Metal AlloyCompatibility: For Bambu Lab A1 Series Features:1.High-Speed Printing Capability The TWO TREES A1/A1 mini Extrusion head kit is designed to enhance printing speed significantly, especially with larger nozzle sizes such as 0.4mm. Larger nozzles extrude more filament per second, making them ideal for projects requiring quicker turnaround times. When compared to smaller nozzle sizes, these larger nozzles can reduce overall printing time by up to 60%.2.Quick Nozzle Replacement Design Featuring an innovative magnetic block, this nozzle replacement system allows for a quick and seamless switch within just 30 seconds—no tools required. This user-friendly design minimizes downtime, enabling you to spend more time on actual printing rather than on maintenance.3.Exceptional Precision With a 0.2/0.4/0.6/0.8mm nozzle, it ensures high-resolution printing by delivering finer, more detailed layers. Ideal for intricate models and precise applications, the smaller nozzle size can achieve layer heights as thin as 0.1mm, providing a superior finish quality.4.Robust Construction Made from high-quality metal alloy, the extrusion head is engineered to withstand high temperatures and prolonged use. This ensures consistent performance over extended periods, even when printing with demanding materials such as ABS or PETG, making it a reliable choice for professional and hobbyist use.5.Versatile Compatibility Specifically designed for the Bambu Lab A1 series, this extrusion head kit seamlessly integrates into your existing setup. Whether you're printing prototypes, models, or functional parts, the adaptability of this nozzle kit allows for a wide range of applications, ensuring it meets your diverse printing needs. Package Included:1 x Extrusion Head Kit (0.2/0.40.6/0.8mm Nozzle Optional)or1 x Silicone Case