Universal car cup base can be adjusted from Min.2.3″ to Max.4.2″，and Can be Extendable to 9″ Length, fits most car cup holder, no need extra tools, you can get three packs of silicon slice for the base extension support to fit larger cup holder. Featuring one-button release curved arm and extendable feet, It ensures safe driving whether you are talking, navigating, listening to music or charging. Compatible with all cell phones and devices between 2.1-4.0 inches width (Support maximum 0.99″ thickness device,). Fit iPhone XR/XS Max/XS/X/8/8 Plus/7/7 Plus, Galaxy S10/S10 Plus/S9/S8 Edge/Note 9, LG, Google, Sony, Huawei phones and More. Up to 4.2″ cup diameter, You could use your cup holders in car, truck, RV, boat, golf cart, etc .