Feature:1. Good Sealing: Road bike headset bearings sealed double bearing, good sealing, maintenance free, flexible rotation, low noise.2. Advanced Technology: Road bike headset bearings adopts oil sealing waterproof technology, placing the waterproof oil sealing on the edge of the upper bowl of the headset set, which is light and thin.3. CNC Process: Front fork stem headset bearing bowl group adopts CNC process, anodized coloring, smoother surfaces, not easy to fade.4. Exquisite Craftsmanship: The bike front fork stem headset bearing bowl group is finely machined to ensure smoother surfaces for a perfect fit on your bike.5. Aluminum Alloy Material: Front fork stem headset bearing is made of aluminum alloy material, which is rust proof and durable.Specification:Item Type: Mountain Bike HeadsetProduct Material: Aluminum AlloyProduct Model: DH-506Product Application: Suitable for Small Tapered Tube 44-50.6mm Frame, Used with Standard 28.6mm Straight Tube Front ForkPackage List:1 x Sunflower Components3 x Headset Cover Assembly 2 x Pressing Rings