The RAM-B-202U consists of a 1" / 25 mm B size rubber ball connected to a 2.5" / 5 cm diameter round plate. This mounting component
Includes:: pre-drilled holes using the universal AMPS hole pattern. Features 2.5" / 5 cm round plate connects to RAM® device holders containing the universal AMPS hole pattern Included B size 1" / 25 mm RAM® rubber ball allows for connection to any B size RAM® double socket arm, ball & socket technology allows for near-infinite adjustability made from powder-coated, marine-grade aluminum for durability & reliability in the most demanding environments
Dimensions Hole pattern 4-hole AMPS: 1.181" x 1.496" / 3.0 x 3.8 cm Hole pattern 3-hole 120-Degree: 1.812" / 4.6 cm diameter B size Ball 1" / 25 mm Base diameter 2" / 5 cm Weight Capacity Standard use: 2 lbs / 900 gr. Heavy-duty use: 1 lb / 450 gr.