High precision CNC machined nozzle with a smooth inner bore and rounded edges for smoother filament feeding and fewer jams. Tolerance is under 0.02 mm. Wide compatibility for select Anycubic printers. Replaces Anycubic Kobra S1, S1 Combo, AnyCubic Kobra 3, 3 Combo, and Ace Pro 3D Printer. Please confirm your model before purchase. Hardened steel construction with advanced heat treatment. Provides better thermal conductivity, higher hardness, improved oxidation resistance, and longer service life. Leak-free flat nozzle design reduces filament leakage. Suitable for a range of materials including PLA, ABS, PETG, TPU, and wood filament. Use scenarios: - Upgrading a Kobra S1 or Kobra 3 series to improve reliability and print quality on long runs. - Printing with abrasive or flexible filaments that benefit from consistent extrusion and reduced jams. - Producing wood filament or similar materials that require stable feeding and minimal leakage for cleaner finishes.