The RAM-B-180-A-202U consists of a 1" diameter ball base with 9mm hole, short double socket arm and round base that contains the universal AMPs hole pattern. This mount is often used on motorcycles, attaching to the mirror frame, most commonly found on BMW motorcycles. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm this allowing for almost infinite adjustment and perfect viewing angles.