The RAM-101U-225-XAT1, powder coated marine grade aluminum mount, consists of a double socket arm mount, one round 2.5" diameter round base with the universal AMPS hole pattern and one 2 x 2.5" rectangular base. Rubber ball, socket technology dampens shock and vibration, as well as allows for almost infinite adjustment, perfect viewing angles. For most applications, mount will support up to ten pounds.