RAM Mount Humminbird / Lowrance Elite/Mark Series Mount f/ Units Under 5lbs. [RAM-B-107U]Ram Mount Humminbird Lowrance Elite Mark The RAM B 107U, powder coated marine grade aluminum mount, consists of a double socket arm, one 2. 5" diameter round base and connecting Humminbird Lowrance marine base The mount is designed with a 1" diameter patented rubber ball and socket system that has adjustment points at the cradle base and bottom base. With a twist of the arm knob, you can move the Humminbird and Apelco marine mount to your optimum