The RAM-238U ball base consists of a 1.5" C size rubber ball connected to a 2.43" x 1.31" diamond plate. The diamond plate features two holes that measure 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.

• Diamond plate features industry-standard AMPS hole pattern and measures 2.43" x 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