RAM Composite Snap Link Diamond Base
The RAP-SB-238FU consists of 2.43″ x 1.31″ composite diamond base with female socket. The base has two holes 1.912″ from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles. The female socket will attach to RAM snap link ball mounts.
– See more at: http://www.rammount.com/part/RAP-SB-238FU#sthash.RlzIZEZi.dpuf