Separate base: The cup holders are made of stronger ABS material. This replaces the common, shorter base. The separated base is more practical and securely installed in the car. This cup holder offers extra convenience. All supports are on the same plane, so the cup does not wobble while the car is moving. You can store car gadgets, bottles, drinks or coffee. Adjustable: The cup holder can hold bottles from 7.5 to 14 cm in diameter and weighs about 0.52 kg. To create more storage space, it can also be used with most bottles with a diameter of 8.7 to 9.7 cm. Before purchasing, be sure to check the product size in the picture and compare it with your specific application. Extendable base: The insert diameter can be extended from 6.4 to 10 cm to fit many different cup holders in the car. Just turn the top of the adapter to extend or retract the base. It is also suitable for motorcycles and boats, trucks and camping etc. Our extra thick padding on the extension base ensures that the adapter is securely fastened in your cup holder. Easy to install: Just insert the cup holder into the car's cup holder, hold the top and turn the knob. The base retracts or extends, and the tip protrudes and screws onto the cup holder in the car's center console. Slide the top knob to easily adjust the top space to fit different sizes of bottles or cups. Includes 3 extra silicone extensions for large bottles. Product package: 1 x Car cup holder; 1 x Separate base; 3 x Extra silicone extensions; 1 x User manual. This car cup holder can save you a lot of time.