Bicycle Saddles This aluminum bike cargo rack is sturdily built to support up to 20lb cargo. It is adjustable and retractable, very convenient to transport your cargo with ease. Features: Sturdy aluminum alloy construction supports up to 9kg (20lbs) cargo. Adjustable to fit different bikes, retracted for easy storage. Fits seat post diameter: 22-32mm/0.87-1.26in. Easy to install with the included rubber pad and L wrench. Allow you to transport your cargo with ease and efficiency, perfect for use with panniers, backpacks, baskets, etc. Specifications: Material: Aluminum alloy Fits seat post diameter: 22 - 32 mm / 0.87 - 1.26 in Size: 33 * 12cm / 13.0 * 4.7in Weight: 475g / 1.0lb Package List: 1 * Bike Cargo Rack 1 * Rubber Pad 1 * L Wrench