1、Oil Sealing Waterproof Technology: Bike bearing headset 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. 2、Double Bearing: Road bike headset bearings sealed double bearing, good sealing, maintenance free, flexible rotation, low noise. 3、CNC Process: Front fork stem headset bearing bowl group adopts CNC process, anodized coloring, smoother surfaces, not easy to fade. 4、Aluminum Alloy Material: Mountain bike headset is made of aluminum alloy material, which is rust proof and durable. 5、Smoother Surfaces: The bike front fork stem headset bearing is finely machined to ensure smoother surfaces for a perfect fit on your bike. Item Type: Mountain Bike Headset Product Material: Aluminum Alloy Product Model: DH-341 Product Application: Suitable for 34mm Straight Tube Head Tube Frame with 28.6mm Standard Tapered Tube Front Fork 1 x Sunflower Components 1 x Bearing 1 x Pressing Ring 3 x Headset Cover Assembly