Product parameters: Materials: ABS plastic and metal Color: Black Size (bottom diameter x height): 2.76 * 5.51 inches/7cm * 4cm Cup holder diameter: approximately 7cm~8cm Adjustable clip size: approximately 0.59-1.57 inches/1.5cm-4cm Easy to install: no tools required Simply place the cup holder in the desired location and tighten the screws. 360 degree rotation: Bicycle bottle racks can be installed on handlebars, lower tubes, forks, and front tubes. Anyway, the cup holder can rotate upwards at any angle. You don't have to worry about the drink spilling. features: Suitable for any type of vehicle, whether it is a crossbar or a sturdy pole. The size of the cup is universal, with adjustable rotation in all aspects, making it easy to install. Heat resistant and cold resistant, carefully selected in every location. Rotate the black knob to adjust the size of the jaws and secure them in place. Grasp the cup tightly and don't let it fall off High quality materials: The bottle rack is made of high-quality ABS plastic and metal accessories, which are very durable. It is a perfect bicycle accessory that will not wear down the paint of the bicycle. Widely applicable: This bicycle bottle holder is very suitable for mountain bikes, bicycles, strollers, wheelchairs, and more. Compatible with most baby strollers, such as Chicco, Budweiser, Peg Perego, City Mini, etc. Bottle cages can be used to hold bottles, water bottles, beverages, juices, etc