High Quality: The bmx parts are made of steel, they are sturdy, with high strength, and are suitable for long-term use
Special Design: These bike balls are equipped with multiple ball bearings, which can rotate and are sturdy and won't come off
Wide Application: The ball bearing fixed cage can be widely applied to various types of bicycles, such as road bikes, mountain bikes, ordinary bicycles, low-sitting bicycles, telescopic bicycles, skateboards and folding bikes