1. The integrated shaft design ensures better concentricity of the gears, reduces eccentric rotation of the gears due to assembly, and ensures that the gears transport filament more evenly.2. Helical gear design, better meshing performance, smoother gear transmission, and more linear transmission force. The transmission overlap is large, the meshing time is long, and the contact area is large, which reduces the stress, thereby improving the loadbearing capacity of the gear and extending the service life of the gear.3. Use highstrength mold steel as the material of the feeding gear, and use nanocoating for treatment. The overall hardness HRC value of the gear reaches 6265; the hardness HV value reaches 10001200, 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 gear kitApplicable models: for Adventurer 5MProcessing technology: CNCColour:White&Silver&BlackMaterial:Steel nano coatingPackage Contents:1 x Extrusion Gear for AD5M 3D PrinterOnly 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 +/ 13cm.