This is a bike stem headset, made of good materials, with sturdy texture and durability. The headset can be placed on your pole to add a to your bicycle. The good production process makes it have good functionality, safe to use and . It is a good bike replacement accessory. Features - ColorAssorted Color -Material:Aluminum Alloy, Steel - Size: 5.00X4.00X2.00cm/1.97X1.57X0.79in -Made of good and sturdy materials, smooth and durable, lightweight and practical for a long using time. -This bike headset has a wide range of use, suitable for mountain bikes, road bikes, convenient and durable. -Convenient and practical bike stem headset bearing is a professional and practical bike replacement part. -You can replace the old one with this efficient and practical headset bearing to make your riding safer. -Easy to install and use, and can easily replace old parts, and this bike headset is convenient and practical. Package list: 1 x Set of Bike Headset