The RAM-B-238U ball base consists of a 1" / 25 mm B size rubber ball connected to a 2.43" x 1.31" / 6.2 x 3.3 cm diamond plate. The diamond plate features two holes that measure 1.912" / 4.85 cm from center to center, matching the industry-standard AMPS hole pattern. This diamond ball base is compatible with a wide variety of RAM® device holders & cradles. Features Diamond plate features industry-standard AMPS hole pattern & measures 2.43" x 1.31" / 6.2 x 3.3 cm Compatible with several RAM® device holders & cradles, 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 2-hole AMPS: 1.912" / 4.85 cm B size Ball 1" / 25 mm Base size 2.43" x 1.31" / 6.2 x 3.3 cm, diamond shaped Weight Capacity Standard use: 2 lbs / 900 gr. Heavy-duty use: 1 lb / 450 gr.