RAM MOUNTS' RAM-111U-B marine-grade short double socket arm mounting base (powder coated aluminum) is composed of one 2.5 in round base with AMPS hole pattern and one 6.25 x 2 in base with pre-drilled holes. The double socket mount ball size is 1.5 in.

The RAM short mounting arm is designed to minimize shock and vibrations, as well as allow for adjustments for the perfect viewing angle. For most applications, this double socket arm mount will support up to 10 lb.