1、Superior Gear Design: The oblique teeth gears ensure a tighter fit without slipping, while the nano coating and hardened surface provide wear resistance and rust prevention for optimal printing results. 2、High Strength Materials: Made from hardened steel with a nano coating surface treatment, achieving a for Rockwell hardness (HRC) of 62 to 65 and a for Vickers hardness (Hv) of 1000 to 1200 for maximum strength, durability, and erosion resistance. 3、Accuracy Axle Design: The integrated shaft design enhances gear concentricity, reducing eccentric rotation during assembly and ensuring a more uniform filament feed. 4、Robust Construction: This hardened steel extruder gear set is compatible with for X1 series and for P1 series original models, featuring aluminum alloy handles for increased longevity and easy gear replacement, enhancing durability and extending service life. 5、Enhanced Printing Capability: The hardened steel gears allow the extruder to handle engineering filaments like carbon fiber nylon, fiberglass, and nylon, expanding printing possibilities. 6、Applicable Model: This extruder gear with aluminum handle set is suitable for bambu X1 series, for Bambu P1P, P1S, etc.