### Industrial-Grade Hardened Steel Construction Made of hardened steel with HRC 62-65 hardness, far exceeding the wear resistance of standard brass gears, supporting long-term high-load printing. ### Nano-Coated Anti-Wear Technology Surface nano-coating reduces friction and corrosion, extending service life by up to 5x compared to ordinary gears, eliminating jams and under-extrusion. ### Precision CNC Machined Helical Teeth High-precision tooth profile ensures uniform filament feeding, reducing uneven extrusion and layer shifting issues for smoother print quality. ### Perfect Compatibility with Flashforge AD5X Engineered to match the original extruder structure, direct plug-and-play installation without modification, restoring and enhancing the printer’s performance. ### Enhanced Stability Under High Pressure Stable operation under 1000-1200 pressure, maintaining consistent feeding even with engineering filaments like ABS, PETG, and nylon.