The RAM® Universal Marine Electronic Mount (RAM-B-111U) is a kit intended for lightweight mounting for marine GPSes, CB radios, ham radios, gimbal brackets, and more. It comes with a 2.5" diameter, drill-down base, double socket arm, and 6.25" x 2" adapter plate. The drill-down base features 2-hole and 4-hole universal AMPS hole patterns. The adapter plate is pre-drilled with multiple hole combinations, including the universal AMPS hole pattern, that will match up with electronic devices or manufacturer-provided brackets. The kit is made entirely of black, powder-coated aluminum long-term durability in fresh and salt water.