This single suction cup mount (RAM-B-166-326U) was designed in collaboration with OtterBox Hardline Series for industrial applications. This kit Includes B-size RAM® Twist-Lock™ suction cup base, medium length socket arm, and a RAM® EZY-Mount™ Quick Release Adapter for OtterBox Hardline Series. With the quick release tab, simply push the tab to dismount the tablet without having to adjust with the mount itself. The RAM-B-224-1U suction cup base consists of a 3.3" diameter RAM® Twist-Lock™ suction cup connected to a RAM-B-238U diamond base with a 1" B size rubber ball. The RAM® Twist-Lock™ suction cup base is a fan favorite for use on vehicle windshields, and provides an extra strong hold on any smooth, nonporous surface.