Features: Make of Aluminum alloys, perfect for heavy load transport, providing a smooth and safe ride for your possessions. With no edges and corner, preventing any scratches or damage to stored good on the Cargo Rack Rear. With fixed hole design for simple and firm installation, making it easy to install and offering excellent adjustability for most your cargo needs. The surfaces have rusts prevention treatments and have excellent corrosion resistance, which can maintain good condition even in rainy or humid environment. Suitable for many kind of bikes, such as mountain bike, road bike, fold bike. Specifications: Component: Aluminum alloys Size: about 40x40cm/15.75x15.75inch Package Includes: 1set Bike Back Shelf 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.