The RAM-101-D consists of a long double socket arm and two 2.5" diameter round bases with the universal AMPS hole pattern. The mount is 10.73" tall at maximum extension and is collapsible. The rubber ball and socket technology dampens shock and vibration, as well as allowing for almost infinite adjustment and perfect viewing angles. For most applications the mount will support up to five kilos. Material: Powder Coated Marine Grade Aluminium Ball Size: 1.5" Rubber Ball Size Components RAM-202 x 2 RAM-201-D