Feature: 1. [Upgraded Nozzle Structure] This hotend kit features threaded nozzle design that is easily detachable for individual replacement. Additionally, it comes with 0.2, 0.4, 0.6, 0.8mm nozzles for different printing needs. 2. [Premium Material] The ni plated brass ti alloy heating block offers excellent heat resistance, wear resistance, erosion resistance, and a longer lifespan, ensuring durability and performance. 3. [High Temperature Printing] The nozzle is made from hardened steel material, provides superior thermal conductivity, strength, oxidation resistance, and durability, supporting filament temperatures up to 320℃. 4. [Insulated Silicone Sleeve] The silicone sleeve insulates the heating block from the cooling fan and helps stabilize temperature, promoting consistent and reliable printing performance. 5. [Compatible Models] This nozzle hotend kit is designed for A1, for A1 Mini 3D printers, ensuring seamless integration and optimal performance. Specification: Item Type: 3D Printer Hotend Material: Silicone, Hardened Steel Compatible Filament Diameter: 1.75mm Nozzle Diameter: 0.2mm, 0.4mm, 0.6mm, 0.8mm Installation Method: Threaded Fixing Compatible Filament: PLA, ABS, PETG, TPU, PP, PC, Nylon, etc. Compatible Models: for A1, for A1 mini Installation Method: Magnetic Adsorption. Package List: 1 x 3D Printer Hotend (Assembled with 0.4mm Nozzle, Silicone Sleeve) 1 x 0.2mm Nozzle 1 x 0.4mm Nozzle 1 x 0.6mm Nozzle 1 x 0.8mm Nozzle 2 x Wrench