The upgraded gears have improved concentricity and pass through the material more smoothly. The integrated shaft design ensures better concentricity of the gears, reduces eccentric rotation of the gears due to assembly, and ensures that the gears port filament more evenly. Helical gear design, better meshing performance, smoother gear mission, and more linear mission force. The mission overlap is large, the meshing time is long, and the contact area is large, which reduces the stress, thereby improving the load-bearing capacity of the gear and extending the service life of the gear. Use high-strength mold steel as the material of the feeding gear, and use nano-coating for treatment. The overall hardness HRC value of the gear reaches 62-65; the hardness HV value reaches 1000-1200, which greatly ensures the gear Strength, wear resistance and resistance, improve the bearing capacity of the gear and extend the service life of the gear. Name:Nano coating extrusion head gear kit Applicable models:For X1 series, for P1P and P1S, etc. Processing technology: CNC Colour:Black & Silver Material:POM+nanocoated mold steel Package Contents: 1 * 3D Printer Gear Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.