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″
