The Foba Base Plate is a metal hexagon equipped with a 3/8"-16 threaded protruding screw. While officially designated as for use with the Foba Superball series of ballheads, it certainly makes for an effective base with any ball head, geared head or pan/tilt head whenever broad, low support is needed. The 9" (23 cm) diameter hexagon plate is incredibly stable and the Base Plate makes for a valuable studio accessory.
With a weight of 2 lb, it can be occasionally used for field use as well. When the base plate is put upon a flat surface, you can rest assured that the tripod head and camera combination can be placed in any position which the tripod head will support without concern for movement of the base plate itself.