The 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.