This bicycle rack is made of durable aluminum alloy material. It can be fixed tightly onto the seat post of your bicycle. Quickly installed and removed, it will surely contribute to your fantastic cycling experience! Features: Fix tightly onto the seat post of your bicycle. Suitable for bike whose seat post diameter is less than 27mm. Adopt high-strength aluminum alloy material, durable and sturdy. Quick installation and removal. Specifications: Color: Black Material: Aluminum alloy Maximum loading: Approx. 10kg / 22lb Size: Approx. 51 * 13 * 24cm / 20 * 5.1 * 9.4in Weight: Approx. 0.9kg / 2lb Note: Please allow some size and weight differences due to manual measurement, thanks. Bicycle Rack ONLY, other items displayed in pictures are for illustration purpose ONLY, they are NOT included in the listing! Package List: 1 * Bicycle Rack 4 * Pad