Compatible with A1 and A1 mini 3D printers - This nozzle hot end kit uses an improved threaded nozzle design with separate, removable, and replaceable nozzles. It is available for A1 and A1 mini printers. Easy to replace and cost efficient - The Xirbbo A1 extrusion head supports interchangeable hardened steel threaded nozzles that can be removed and replaced. - This design improves upon the original A1 hot end, which did not have interchangeable nozzles, and helps reduce operating costs by enabling quick nozzle changes without replacing the entire head. Quality materials for durability - Heating block constructed from nickel plated brass and Ti alloy provides strong heat resistance, abrasion resistance, and erosion resistance, contributing to long service life. High temperature printing performance - The tempered steel nozzle is made from hardened steel for higher thermal conductivity, greater strength, and improved oxidation resistance. - This nozzle is designed for long life in demanding environments and can support high temperature filaments up to 320 C. - The nozzle is removable to simplify replacement and save time during maintenance or upgrades. 2-3 practical use scenarios - Scenario 1: Material versatility and customization. Swap nozzles quickly to switch between filament diameters or materials (for example switching between standard 0.4 mm and alternative nozzle sizes) without changing the entire hot end, enabling on-the-fly adjustments for different print jobs. - Scenario 2: Downtime reduction and maintenance. When a nozzle wears or clogs, replace only the nozzle instead of the entire hot end, reducing downtime and maintenance costs. - Scenario 3: High temperature and demanding materials. Use the hardened hardened steel nozzle for higher temperature filaments up to 320 C, such as PC and other engineering plastics, while benefiting from increased durability and reliable performance. Key attributes at a glance - Function: removable and replaceable nozzles for the A1 and A1 mini hot end - Compatibility: A1 and A1 mini 3D printers - Material: nickel plated brass heating block, Ti alloy construction, hardened steel nozzle - Performance: improved heat resistance, abrasion resistance, erosion resistance, and long service life - Temperature capability: supports filaments up to 320 C with a replaceable nozzle for easy maintenance This description reflects the Xirbbo A1 extrusion head and its features, maintaining the original specifications, models, and functions.