Features1[Sturdy Aluminum Alloy] The bike headset is crafted from high strength aluminum alloy, sturdy and lightweight, reduces the burden on the bike, capable of withstanding impacts. 2[Precise CNC Cutting] With precise CNC cutting technology, every edge and aperture of the headset achieves micrometer level accuracy, ensuring seamless fit. 3[Sealed Bearing] Featuring sealed double row ball bearing, the headset is water and dust proof, providing sensitive feedback for deceleration control even in harsh conditions. 4[Lubricated Bearings] The lubricated bearings, combined with precise bearing structure, deliver smoothly and quiet steering actions, enhancing riding enjoyment. 5[Anodized Finish] Utilizing anodized finish technology, the headset effectively resists daily wear and erosion while maintaining a vibrant and long lasting color.SpecificationItem Type: Bike HeadsetMaterial: Aluminum AlloySpecification: 44-55mmPackage List1 xBike Headset