ITEM NAME:2Pcs Modification Bracket Bicycle Holder Brake Rack Discs Bike Disc Brake z x c Descriptio n Description: Material: Stainless steel Colour: Black Size: The inner diameter of the modified ring is about 22mm. For original bicycles without disc brake installation position, for disc brake modification. Made of high quality material, durable to use. Specifications: Material: Stainless steel Colour: Black Size: The inner diameter of the modified ring is about 22mm Package Included: Bicycle disc brake modified bracket * 2 (specification: 32mm * 1; 20mm * 1) Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. Whatever the ending's perfect or not, you can't disappear from my world 2Pcs Modification Bracket Bicycle Holder Brake Rack Discs Bike Disc Brake z x c.For original bicycles without disc brake installation position, for disc brake modification. We'd like to settle any problem in a friendly manner. Whatever the ending's perfect or not, you can't disappear from my world.