The RAM-B-238U ball base consists of a 2.54cm (1″) B size rubber ball connected to a 6.17 cm (2.43″) X 3.33 cm (1.31″) diamond plate. The diamond plate features two holes that measure 4.86cm (1.912″) 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 and cradles. Features Diamond plate features industry-standard AMPS hole pattern and measures 6.17 cm (2.43″) X 3.33 cm (1.31″) Compatible with several RAM® device holders and cradles; ball and socket technology allows for near-infinite adjustability Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Backed by a lifetime warranty
