Bike Cargo Rack, Rear Carrier Seat Load 110 lbs Adjustable Bicycle Frames Cycling Mountain Bag Shelf Bicycle Accessories 1. Aluminum alloy material , Fit almost bikes, road bike, mountain bike, fat bike, etc. (Kids' bike can not be used ) .Come with tools and installation instruction, Easy to install. The Rack body is adjustable in size 2. 110Lb Capacity, Durable Alloy Steel Rack. For V Brake and Disc Brakes. 3. Shelf Length 55 cm, Width 14.5 cm; Panel Length 35.5 cm; Width 14.5 cm. (Seat Tube Diameter 2.2-3.3 cm / 0.85-1.3") adjustable for kinds of bikes. Easy to Mount.It is perfect for use with panniers, backpacks, baskets, and more! 4. [UNPACK]:1 * Rack Body, 6 * Support Bar, 7 * Screws, 2 * Rubber Gasket, 2 * Form Gasket, 1 * Reflector, 1 * Install Instruction, 1 set *Installation tool ,1 * free Keychain (Gift) NOTE: Come with the installation tool if not received please contact us reissue *30 DAY MONEY BACK GUARANTEE- All West Biking customers enjoy 30 Day Money Back Guarantee. Customers can return and get refunded in case the purchasing is not satisfied for any reason. You have no risk to try.