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The RAM® Track Ball™ is made up of a C size 1
The zinc coated u-bolt accommodates rails in diameter from 0
The mounting section of the plate is a 2
The small post on the base is designed to connect to the RAM-109 series arms
The RAM-B-108BU-HUM1 accommodates rails from 1
RAM® Chrome Double Socket Arm with Diamond Plate - Medium Arm G8S ThinQ The RAM® Track Ball™ isThe RAM B 103 238CHU consists of a CHROME diamond base and double socket arm that will accept 1" ball bases. The diamond base measures 2. 43" x 1. 31" and contain two holes 1. 912" from center to center, positioned at both ends of the diamond base. The hole pattern found on the diamond base will connect to many RAM cradles, as well as third party cradles including mounts with the industry standard AMPS hole pattern.
