Free hanging free bottle cage adapter. Specification: Material: aluminum alloy Color: black, blue, red, yellow, silver (as shown, color optional) Size : 11.5*7 cm/4.5*2.8 inch Weight: 130 g Applicable models: folding car, road bike, mountain bike, ladies car and other models Applicable parts: front and rear riders, faucets, front tubes, front forks, upper tubes, front and rear left and right seat tubes, etc. Use: sports, outdoor, travel, home   Specifications: Two bottle cages can be installed and installed in the rear seat. It is more convenient and time-saving to race or long-distance riding. Made of high-quality aluminum alloy, it is sturdy and durable. The flexible and elegant design is suitable for all types of vehicles and is easy to install. Portable, durable and convenient. Exquisite workmanship, rounded and smooth corners. Package Included: Adapter *1 Small screw *4 Large screw *2 Gasket*2 Shock block*1