• Complete set including 30 nozzles of different diameters (0.2 mm, 0.4 mm, 0.6 mm), 10 cleaning needles, 1 nozzle wrench, 1 stainless steel tweezers, and 1 storage box for tools • Allows timely replacement of nozzles and ensures high-quality 3D printing • The nozzles feature a smooth, burr-free inner wall, with a low viscosity coefficient and a diameter error of less than 0.02 mm, ensuring precise and smooth extrusion • Made of brass and stainless steel, materials that offer durability, heat resistance, corrosion resistance, and abrasion resistance • Suitable for 1.75 mm 3D printer filaments, including special filaments such as carbon fiber and fiberglass • Compatible with Creality Ender 3 V2, Ender 3, Ender 3 Pro, Ender 3 Max, Ender 5 Pro, Ender 3 S1, CR 10 Series 3D printers and other models that use M6 external thread and 1.75 mm input diameter