The RAM-B-347U base consists of a B size 2,54 cm (1") diameter rubber ball connected to a 50.8mm x 43.2mm square base. The base has four pre-drilled holes at each corner, using the universal AMPS hole pattern.

PLATE SIZE
50.8mm X 43.2mm

BALL/SOCKET SIZE
B Size (25.4mm) (1")

MATERIALS
Marine-grade aluminium