Optimized Upgrade for A1: This mini hotend kit is specifically designed for the A1 and A1 Mini 3D printers. It features a hardened steel nozzle that ensures durability and precision in 3D printing. Efficient Design: This nozzle offer an excellent balance between print quality and speed. The magnetic block in the hotend facilitates quick and secure nozzle changes, enhancing convenience and safety. Installation Note: the hotend is cool before attempting to replace the nozzle to avoid . Avoid contact with the heating block during installation. Compatibility: Perfectly suited for both the A1 and A1 Mini models, this kit is essential for anyone looking to improve their 3D printer's performance. Colour:As Shown Material:plastic nozzles:0.4mm Package Contents: 1 * Hotend Kit 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.