The RAM-B-101A, is a powder coated marine grade aluminium mount. It consists of a standard length double socket arm, two 2.5" diameter round bases (One with a threaded camera mount) with the universal AMPS hole pattern. Rubber 1" ball and socket technology dampens shock and vibration, as well as allowing for almost infinite adjustment and perfect viewing angles. Colour: Black Powder Coat Ball Size: 1 Inch Rubber Ball Material: Powder Coated Marine Grade Aluminium Components RAM-B-201 RAM-B-202 RAM-B-202A