ITEM NAME:2Pcs Adjustable Bike Frame Brake Kit Mounting Bicycle Disc Adaptor Bracket Description Description: 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. High quality store for you! 2Pcs Adjustable Bike Frame Brake Kit Mounting Bicycle Disc Adaptor Bracket.We'd like to settle any problem in a friendly manner. For original bicycles without disc brake installation position, for disc brake modification. Specifications:Material: Stainless steel. We want to make sure you are happy with our item.