The RAM-B-111U-A consists of a short double socket arm, 2.5" diameter round base and 6.25" x 2" rectangle base. The round base contains pre-drilled holes, including the universal AMPS hole pattern. The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more.
Short Arm RAM-B-111U-A:
Overall Height: 3.75". SOCKET TO SOCKET LENGTH 1.75"
Medium Arm RAM-B-111U:
Overall Height: 5". SOCKET TO SOCKET LENGTH 3"
Long Arm RAM-B-111U-C:
Overall Height: 7.3125". SOCKET TO SOCKET LENGTH 5.31"