Product size: The product has an outer diameter of 51mm, an inner diameter of 30mm, and a thickness of 5.5mm. Manual measurements, please allow slight errors.
Compatibility: This product is suitable for bicycles with 1-1/2-inch bicycle tubes and 1-1/8-inch front forks, and is also suitable for 55mm 56mm below headset.
Easy to install: It can be directly replaced without adjustment, with perfect compatibility and high reliability.
Product material: This product is specially designed and made of aluminum alloy, with a long service life and not easy to damage.
Product list: Product include a total of 2pcs Bike Headset Sealing Spacer, which can completely meet your daily use needs and replacement.