The RAM-101-D-2461 consists of a long double socket arm, 2.5" diameter round base with the universal AMPS hole pattern and 3.625" square plate with VESA hole pattern. The VESA plate contains 75x75MM hole patterns. The rubber ball is positioned 0.88" from the center of one edge. The rubber ball and socket technology dampens shock and vibration, as well as allowing for almost infinite adjustment and perfect viewing angles. Material: Powder Coated Marine Grade Aluminium Ball Size: 1.5" Rubber Ball Size Components RAM-202 RAM-201-D RAM-2461