- Upgraded nozzle structure: Detachable hardened steel nozzle designed for Lab A1 and A1 Mini 3D printers; enables easy nozzle replacement to reduce downtime and ongoing costs. - Superior materials: Ni-plated brass-Ti alloy heating block delivers excellent heat resistance and long life, ensuring durability for high-temperature printing up to 320 C. - Easy replacement: Redesigned from the original with threaded, interchangeable nozzles for the A1 extrusion head; simplifies installation and saves time during maintenance. - High-temperature capability: Hardened steel nozzle offers higher thermal conductivity and oxidation resistance, suitable for high-temperature filaments such as PLA, ABS, PETG, TPU and more. - Use scenarios: - Prototyping with multiple materials: quickly switch nozzle sizes for materials like PLA, PETG, or ABS in a classroom or workshop setting. - High-temperature printing: run demanding parts at up to 320 C with durable components for reliable performance. - Maintenance and cost savings: reduce replacement frequency and downtime with a robust, interchangeable nozzle system for the A1 extrusion head.