2 in 1 and Adjustable BaseThe Car Cup Holder can use as phone tablet holder and cup holder meanwhile. The expandable base design makes it can use for bigger cup holder by turning the knob, the base will extended from 2.68" to 3.81"(68mm-97mm),which can fits almost all car cup holders. Extra 3 base detachable extender will extende to 4.8".The car cup holder can fits for most bottles, which are 12-40 oz, 4.68" diameter wide bottles Super Stable & DurableThis kind car cup holder adopts double-section fixed bracket arm design, with two fixing point, strengthens the stable, it will reduces the strong shaking by tightened the spiral and fixes the bracket arm. There are 4 pieces non-slip silicone pad to make sure that the water cup not shaking while driving on the bumpiest road,sharper turn or sudden braking 360°Rotation & AdjustableThe mount utilized swivel ball connection design, making the car mount and bracket arm can 360 degrees rotate, easy to adjust, you can