RAM Mount RAM Marine Electronics Ball Adapter [RAM-D-115BU]

RAM® Marine Electronics Ball AdapterThe RAM-D-115BU, a universal mounting plate, consists of a 2.25″ diameter rubber ball, connected at right angles to a flat 6.25″ x 2″ rectangular plate. The plate contains different combinations of pre-drilled holes which will match up to many electronic devices.Features:
D size ball adapter for 9″-12″ fishfinder gimbal brackets
RAM® Mounts ball and socket technology allows for near-infinite adjustability
Made of Powder-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments
Backed by a lifetime warranty
Specifications:
Plate Size: 6.25″ x 2″
Ball/Socket Size: D Size (2.25″)
Weight Capacity: Standard Use: 6 lbs/Heavy-Duty Use: 5 lbs 
Materials: Marine-Grade Aluminum
Additional Information: The 6.25″ x 2″ rectangle base is a universal mounting bracket with a selection of mounting hole locations. In certain applications, additional holes may need to be drilled for proper fit with your electronic device.