<p>[Product size] 13.1*7.4 cm.【Safely holds water bottles】 The bicycle bottle holder is made of a single piece of high-quality plastic and is very stable . The bottom of the water bottle holder is designed with a triangular bracket so that the water bottle can be securely held in the water bottle holder without rattling or falling. The bottle stays in place even on rough roads.【Easy to install】 The bicycle bottle cage is fixed by screws. Simply unscrew the existing screws on your bike, then attach the bracket and retighten the screws to complete the installation. We also added an additional water bottle holder to make the installation of the water bottle holder more flexible. Easy access to the water bottle: there is no obstacle to the entrance of the holder bottle, making the water bottle easy to hold. So the water bottle can be easily removed from the holder and reused while driving without any problem.Can hold different sizes of water bottles: the bottle holder can accommodate bottles with a base diameter of 55mm to 70 mm. The height limit of the bottle mainly depends on the sufficient space on the bicycle where it can be mounted.【Excellent Gift Choice】 For bicycle lovers, it is very important to provide a bottle holder for the bicycle. This makes driving easier and more comfortable. Therefore, it is very suitable to give this bicycle water bottle holder to your friends or children.Note: The data are all measured manually, please allow 1-3cm error due to difference. light and display, there may be color differences, please refer to the actual item received.</p>