Features: Designs to fit bicycles frames without a disc brake seats, this adapter is a solution for upgrading your bike's braking systems. Make from Aluminum Alloys and steels, light in weigh, Enduring, not only strong but also practical. This bicycles disc brake adapter can used on bike frames without a disc brake seats. Once installed, you can easily attach disc brakes to enjoy improved braking performances. Simple structure that is easy to install and use. No need to worry about complicated installations or tool! Specifications: Materials: Aluminum Alloys and steels Color: Black/Redness/Blue/Purpleness/Titaniums/Gold/Colorful Size: about 12.1x7.50cm/4.76x2.95inch Package Includes: 1pc Disc Brake Adapter Converter note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store