The RAM-224U consists of a 3.3" diameter suction cup twist lock base that is connected to the (RAM-238), diamond base with 1.5" rubber ball. The suction cup is designed to have an extra strong hold on any smooth non-porous surface, but for best result, mount the suction cup on a glass or non-porous plastic surface.
Material: Powder Coated Marine Grade Aluminum
Ball Size: C Size 1.5" Rubber Ball
Note: The "U" in the part number reflects product packaged in poly bag.