The RAP-B-107-1B-354-TRA1U consists of a Track Ballâ„¢ base, composite double socket arm and connecting Humminbird/Eagle/Lowrance marine base. The mount is
RAM® Twist-Lockâ„¢ Composite Suction Cup Mount with Round Plate Specs Specifications Hardware Included Assembly Hardware Suction Size 3.3″ Diameter Socket