This RAM-2461U consists of a 1.5" rubber ball, connected to a 3.625" square plate with a 75mm X 75mm VESA hole pattern. The rubber ball is positioned 0.88" from the center of one edge. The RAM-2461U will attach to all RAM 1.5" dia. ball double socket arms.
Material: Powder Coated Marine Grade Aluminium
Ball: C size 1.5" rubber
The "U" in the part number reflects product packaged in poly bag.