The RAM-B-238U ball base consists of a 1" B size rubber ball connected to a 2.43" x 1.31" diamond plate. The diamond plate features two holes that measure 1.912" from center to center, matching the industry-standard AMPS hole pattern. This diamond ball base is compatible with a wide variety of RAM device holders and cradles.
The RAM-B-202U consists of a 1" B size rubber ball connected to a 2.5" diameter round plate. This mounting component includes pre-drilled holes using the universal AMPS hole pattern.
The RAM-B-347U base consists of a B size 1" diameter rubber ball connected to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, using the universal AMPS hole pattern.
The RAM-B-202U-152 contains a 1" diameter rubber ball connected to a rectangular plate with a 4-hole pattern of 1" x 1.5" center to center.