- Innovative updated design with interchangeable nozzles - Swap nozzles quickly to match print resolution or material needs. Improved functional design reduces downtime and makes maintenance simpler. - Precise filament compatibility - Built for standard 1.75 mm filament to deliver accurate extrusion and consistent layer quality. Helps reduce stringing and dimensional variation. - Effective brass heating block - Brass heating blocks provide reliable heat transfer and even temperature distribution for stable melting and predictable flow. Improves print consistency across long runs and different filament types. - Practical accessories included - Contains 1 Holnd and 2 -buttons for easy installation and part replacement, so you have what you need to fit or service the unit without hunting for extra parts. Key benefits — why this product matters - Solves common extrusion problems: interchangeable nozzles and a stable brass heater block minimize clogs, temperature fluctuation, and inconsistent extrusion. - Saves time: faster nozzle changes and straightforward installation reduce downtime during maintenance or when switching print jobs. - Improves print quality: compatibility with 1.75 mm filament and even heating help achieve more accurate, repeatable results. Performance and materials - Function: Modular hotend/extrusion component (interchangeable nozzles) - Compatibility: 1.75 mm filament - Material: Brass heating block for effective thermal transfer - Practicality: Includes accessories for installation and replacement Typical use scenarios - Precision prototyping: Use smaller nozzles for fine details on models, then swap to a larger nozzle for faster draft prints without changing the whole extruder. - Printer repair or upgrade: Replace a worn hotend component to restore stable heating and accurate extrusion on desktop 3D printers that use 1.75 mm filament. - Material switching: Change nozzles and maintain consistent melt behavior when switching between PLA, PETG, or other common filaments to reduce rework. This product is designed to improve extrusion reliability and maintenance ease while keeping compatibility with standard 1.75 mm filament and providing stable thermal performance through brass heating components.