1. [Increase the capacity of your trophy holder] IPow Adjustable Vehicle Cup holder expansion adapter can be easily adjusted by a manual to fit the body glass you need. Adjustable diameter between 3.25-5.1 inch for most bottles, beverages, coffee cups, instant noodles, snacks and fast food cups. Matching with Ramblers, hydro bottle, nalgen and more. Expandable base, 2.68-3.94 '' expandable '' SUV, boats, trucks, RVs and golf cars and so on. It is firmly fixed in different automobiles with the original round cup slot. High quality ABS material and thickness 3-bitch upgraded design provides a good balance for your bottles. It does not affect adjacent cup holders, gear changes, middle console cap and car control panel. It has extra 3 expansion blocks made of scratch - rubber, which makes it easy and to use. This cup holder is suitable for most vehicles, but Clamshell cup holders, oval/square cup holders and so on. It may not be suitable for some species such as. Please check if your car is compatible.