Optimized Performance: Designed specifically for the A1 and A1 Mini 3D printers, this hotend assembly kit ensures your printer operates at efficiency. The kit includes nozzles in four sizes: 0.2mm, 0.4mm, 0.6mm, and 0.8mm, allowing for versatile printing capabilities and exceptional detail in every print. Easy Installation: The hotend kit is engineered for easy installation, enabling you to quickly replace worn out or components without professional help. This feature ensures minimal downtime and continuous productivity in your 3D printing projects. and Reliable: Crafted from high-quality materials, the hotend assembly promises durability and reliability, reducing the need for frequent replacements and maintaining consistent performance over time. Color: Black Material: Plastic+Metal Package Contents: 4 * Hardened steel nozzle extrusion headS Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.