If you need a more permanently mounted system, this one attaches to surfaces using machine screws. The RAM Double Ball Drill-Down Mount with Diamond Plate includes a round base with a pre-drilled universal AMPS hole pattern.
The base has a 1" diameter ball that connects to a double socket arm. And the double socket arm attaches on the other end to a diamond adapter that connects to most ram cradles. Combined, the base, arm and adapter measure 5" long.
Cradles and hardware are sold separately.