The RAM-2461-247U-2 consists of a 2" clamp base, double socket arm and 3.625" square base that contains a 75mm X 75mm VESA hole pattern. Designed into the mount is a 1.5" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm.
Ball Size: 1.5" Rubber Ball Size
Material: Powder Coated Marine Grade Aluminum
Note: The "U" in the part number reflects product packaged in poly bag.