Description: With a high strength wear-resistant material, this bowl set is not easy to rust and not easy to deformation, with double Perrin structure light and smooth, no maintenance, making it possible to use for a long time. Lightweight, compact and easy to install, this bowl set is able to tightly connect the fork and frame together to achieve steering. It is constructed of aluminum alloy material. The length of this bicycle headset is 4.6cm and width is 3cm. It is suitable for the MTB bike with a-42mm-inner diameter headset. Item Name: Bicycle Headset Material: Aluminum Alloy Features: Double Perlin Structure, High Strength, Long Service Life Size Details: L: 4.6cm/1.81", W: 3cm/1.18"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bicycle Headset