Designed for bigger insulated cups, plastic water bottles or even a steel coffee cup. Mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm. Zinc coated u-bolt base, double socket arm Includes a Level Cup XL with a B-size RAM Mounts ball directly attached Oversized opening cradles the biggest of gulps Adjustable bottom piece moves up and down to accomoate taller cups Rubber feet flex to fit various sized cups Self-leveling keeps your cups full