[Compatible with Multiple FDM 3D Printers]: Nozzle kit is compatible with Neptune 4 Plus/4 Max 3D printers, please confirm your 3D printer model before ordering. [6Pcs 3D Printer Extruder Nozzle Kit]: The inlet diameter is 1.75mm, the outlet diameter is 0.4mm, includes 3pcs 0.4mm hardened steel nozzles, 1pcs 0.2mm hardened steel nozzle, 1pcs 0.6mm hardened steel nozzle, 1pcs 0.8mm hardened steel nozzle. Sufficient quantity and hardened steel material of the hotend nozzles allow you to easily change them in time for quality printing. [High Precision Nozzles]: The nozzle is made of high-precision CNC machining, with better thermal conductivity and high hardness, smooth and burr-free inner wall, low viscosity coefficient, nozzle error less than 0.02mm, chamfered and rounded to reduce the resistance of the diamond angle to the filament, smoother feeding filament, not easy to clog, to provide you with precise and smooth extrusion. [High Quality 3D Printer Parts and Accessories]: Made of