Refit Adjustable Bicycle Disc Brake Frame Mount Adapter Holder Practical Durable Metal 160/22mm,140/22mm Bike Accessories black.Model Number : brake adapter Size : 160/22mm,140/22mm Use : Kids' Bikes,Mountain Bikes,Road Bicycles Material : Steel Braking System : Other Components : Caliper Brake Other : Gmarty Origin : Mainland China 71185 Bicycle Accessories Useful and practical. A must for cyclists. Mounting bracket can refit normal bicycle to upgrade bike disc brake. It can be converted into