Features: aftermarket Bicycle Disc Brake Bracket.Made of stainless steel for maximum durability.Professional manufacturing, high reliability.Used for original bicycles without disc brake installation position, for disc brake modification.This disc brake bracket is a necessity for cyclists! Specification: Condition: Material: Stainless steel Color: Black Size: 10 x 7.5 x 3.2cm or 3.9 x 3 x 1.3in Ring Diameter: 20mm, 28.6mm, 32mm (Optional) Package Weight: Approx. 67-78g or 2.4-2.8oz Package List: 1 x Disc Brake Modification Bracket Note: 1. Please allow 0-1 inch error due to manual measurement, thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 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.