- Universal Compatibility : This cup holder fits most bottles and cups with diameters ranging from 5.3 to 7.3 cm. Ensure the right fit by checking your beverage container size before purchasing. - Adjustable Base for Various Vehicles : The cup holder expander features an adjustable insert that expands from 5.8 cm to 8.9 cm, accommodating a wide range of cylindrical cup openings in different car models. - Easy Installation : Simply insert the cup holder extension into your vehicle's original cup holder and twist until secure. Enjoy a quick and hassle-free setup with no tools required. - Dual-Purpose Design : The innovative design includes adjustable slots for securely holding both your beverages and smartphone, providing easy access while driving for enhanced convenience and safety. Practical Applications : - Use it during long road trips to keep drinks and your phone within reach for navigation or music control. - Perfect for daily commutes or carpooling, allowing passengers to have their drinks and devices organized and easily accessible. - Ideal for families on the go, ensuring that everyone’s drinks are secure and that you have your essentials at hand. This versatile cup holder expander is designed to enhance your driving experience by providing functionality and accessibility.