The RAM-111BU consists of a C size 1.5 rubber ball connected at right angles to a flat 6.25 x 2 rectangular plate. The plate contains different combinations of pre-drilled holes that will match many electronic devices and mounts, including marine GPS, CB radios, Ham radios, gimbal brackets, and more. Product Features: Universal marine electronic plate includes a variety of pre-drilled holes that match a wide range of devices Included C size 1.5 RAM® rubber ball allows for connection to any C size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability Made of power-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments Backed by a lifetime warranty Made of Powder-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments