Feature: Ensure Tightly Rejected ShakesThe upgraded car cup holder has ABS plastic blades at the bottom, which can make the car mount stand firmly in the car slot, so that it can be placed stably without shaking. If there is still a gap between the original cup slot and cup holder base, you can fill it with a sponge pad to fill the vibration to stabilize the cup holder. Extra Space - Suitable for Most CupsDouble cup holders provide extra space for items without taking up the original cup holder. You can place drinks, food, electronic products, etc., suitable for most cups, such as kettles, coffee cups, fried chicken buckets, and effectively improve the use of interior space. Easy to Use and 4 in 1 Cup HolderEasy to install and use, the bottom and top of the cup holder can be easily turned by the knob, and the car cup holder can be easily removed from the slot. The position of the car cup extender can be moved and adjusted according to the car space. A car cup holder has two cup slots. By rotating the cup holder shaft, 1 cup slot becomes 2. APPLICABLE SIZEThe car cup holder is enough to hold the bottle in daily use, the adapter is best to match the bottle/cup/lightweight bowl diameter 3 inches-6 inches (about 7.6cm-15.2cm). The upper bracket holds 21 oz (about 595.3 ml) beverages, cushions, bottled instant noodles, snack chips. The lower cup holder is suitable for coffee cups, delicate bottles, beverages up to 17 oz.