1、NOZZLE SPECIFICATIONS: 0.4mm printer nozzle set, with standard M6 thread, clear and accurate, providing stable and reliable installation, are essential replacement parts for 3D printer.2、APPLICABLE MODEL: These 0.4mm nozzles are suitable for Neptune 4Plus, for Neptune 4Max 3D printers, widely applied in 1.75mm PLA, ABS, PETG, TPU filament, has strong compatibility.3、HARDENED STEEL: These printing nozzles are made of excellent hardened steel, with high hardness, wear resistance, uniform heating of the printing head, and difficulty in bonding filament.4、HIGH PERFORMANCE: These hardened steel nozzles have a glossy interior, without burrs or notches, reducing air resistance, preventing filament jamming, and supporting high speed printing.5、REPLACEMENT PARTS: This kit includes 5 pieces 0.4mm hardened steel nozzles, which are compact, lightweight, easy to install, and can directly replace old or damaged printing nozzles. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin