The RAM-224-3U consists of a triple suction cup base with 1.5" diameter ball. The RAM-224-3U is designed to have an extra strong hold on any smooth non-porous surface, but for best result, mount the RAM-224-3U on a glass or non-porous plastic surface.
Material: Powder Coated Marine Grade Aluminum
Ball Size: 1.5" Rubber Ball Size
Note: The "U" in the part number reflects product packaged in poly bag.