This bottle holder is specially used for carrying plastic and aluminum alloy water bottles. It is lightweight and suitable for all types of mountain bikes and mountain bikes. . Made of high quality plastic, it has super toughness and will not be deformed or broken under strong impact. In addition, compared with other aluminum alloy water racks, it is not easy to scratch the kettle. . The bamboo carbon fiber pattern is streamlined, beautiful and fashionable, and very individual. It is a very good decorative bottle holder. . It can be installed as long as there is space on the frame, the installation method is simple, and it can be tightened with screws. . The size of this bottle holder is 5.66*3.34*3.3 inch, which is suitable for all kinds of water cup and kettle. Please rest assured that you must buy it. .