Features: 1) The integrated shaft design ensures better concentricity of the gears, reduces the eccentric rotation of the gears due to assembly, and ensures that the gears can transport the filament more evenly 2) CNC hollow POM gear, reduction gear design, high transmission ratio, to achieve greater extrusion torque 3) The gear adopts double instead of the needle bearings, with smaller clearance and higher precision 4) High-strength mold steel is as the material of the feeding gear, and nano-coating is used as the surface treatment process. The overall hardness HRC value of the gear reaches 62-65; the surface hardness value reaches 2000-2500, which greatly ensures the gear Strength, wear resistance and corrosion resistance. 5) Helical gear design, better meshing performance, more stable gear transmission, and more linear transmission force. The transmission overlap is , the meshing time is long, and the contact area is , which makes the stress smaller, thereby improving the bearing capacity of the gear and prolonging the service life of the gear. Specification: Name: BM nano-coating integrated helical gear kit design, while ensuring the strength of the gear itself, the excess material of the gear is hollowed out to reduce the weight of the gear. Scope of application: for BM extruder, VORON 2.4 CW1 and CW2, VORON Trident CW1 and CW2, or other places where this set of gears can be used. If you know mechanical design, you can also part of your extruder design.(Not suitable for Voron V0) Precautions: 1) Not suitable for extruders 2) There are many products on the market that can be equipped with gears, because there is a Space in size and tolerance, you can align the filament inlet by squeezing the gear to move the position or adding spacers on the shaft Material: POM+nano-coated mold steel colour: black Package Contents: 1 x helical gear 5 x accessories