Strong function: This hollow hub shaft can convert normal bicycle axles into quick-release axles (no bicycle skewers included). High-quality material: The bicycle quick-release hub is made of high-quality steel material, which makes it durable, robust and durable. Easy to use: Use for normal ball hubs (does not apply to integrated wheels and bearing hubs) that need to be equipped with quick-release levers. Exquisite craftsmanship: No fear of grinding and corrosion resistance, exquisite craftsmanship, lightweight and practical. Suitable for: Bicycle hub can be used for mountain bikes, useful bicycle accessories for you, the best choice for bike lovers.