1、Assembled Hotend Kit: Upgraded hot end kit, with detachable thread nozzle and high temperature resistance silicone sleeve, suitable for Bambu Lab A1 Mini, with a wide range of applications. 2、Hardened Steel Nozzle: The nozzle is made of hardened steel material, which has higher thermal conductivity, high strength, oxidation resistance, and supports high temperature filaments up to 320℃. 3、Alloy Heating Block: The Ni plated brass Ti alloy heating block has excellent heat resistance, wear resistance, erosion resistance, and a long service life, so you can use it with confidence. 4、Silicone Sleeve: Equipped with insulated silicone sleeve, it effectively prevents the fan from cooling the heating block, helps stabilize the temperature, and provides secure and efficient printing. 5、Convenient and Practical: The assembled hotend kit has a sturdy and detachable structure, making it convenient to install and replace. It can directly replace old or damaged extruder hot ends.