This is a pack of mechanical rear disc brake with 2 brakes set which are made of source material. adjustment make it more easy to use. Rotors have a great shape, minimal scratch or mark on the items, and it fits for most kind of bike use. Features - Color: Black+Silver. - Material: Metal. - Size: Approx. 8.5 x 5.5 x 5.5 cm. - and . - Unique shape make it more practical, it can be used with most kind of bike. - Made of material, durable and practical, ensure your riding safety. - Easy to install and practical, an good choice for replace your old bike brake. - Caution: Please make sure it can be installed on your bike before purchase. - Warm Tip: Dear buyer, Due to lighting effect, monitor’s brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 2 x Bike Disc Brake