Features: This adapter is consist of durability aluminums alloys, ensuring long-terms strength and reliability. Suitable for passionate cyclists, mountain cyclists, and cycling enthusiasts. Suitable for various cycling scheme, whether driving on mountain or commuting in good environment. Good quality aluminum alloys disc brake adapter mounting brackets, changing the cycling experiences. This easy to install adapter easily upgrades the braking systems of bicycles, improving cycling safety and performances. Specifications: Color:Two Elections Dimension:74mm/2.91in Component:Aluminum Alloys Package Includes: 1pc Aluminum Alloys Disc Brake Adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.