RAM Cessna Seat Rail Mount with 12" Flex Arm and Diamond Plate (RAM-B-131-238) (sku 54855)The RAM B 131 238 consists of a cessna compatible seat rail base, 12" long rigid pole, double socket arm and diamond base adapter. 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. The hole pattern found on the diamond base adapter will connect to most RAM cradles. SOCKET TO SOCKET