Check the listing for details. RAM Rectangular 6.25 x 2 inch Marine GPS Mounting System With B-Ball RAM-B-111U. Condition: New. Listed at 39.49 USD. Manufacturer Description The RAM-B-111 RAM Mount Marine Grade Aluminum Mount, with Screw Down Base, consists of the 1 inch diameter ball and socket system with RAM Universal Rectangular 6.25 x 2 inch Plate. This mount is designed to be a universal mounting solution for large electronic devices, including Marine GPS, CB Radios, Ham Radios and more. The hole pattern found on the rectangular plate will connect to a large variety of third party cradle, gimbal brackets and mounts. Rectangular Universal Mount End Plate Design: The RAM-B-111B RAM Mount Marine Grade Aluminum Universal Rectangular Plate has a 1.0 inch diameter Rubber Ball connected at right angles to a 6.25 x 2 inch plate. The plate has many different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. Rectangular Universal Mount Arm Design: The RAM-B-201 RAM Mount Marine Grade Aluminum Dual Socket Arm is a 1 inch B size Ball Socket Arm with open socket ends. The arm is 3.0 inches long between socket centers and is finished with a Black Powder Coating. The side of the arm includes a tightening knob which allows you to open and close the socket ends. Rectangular Universal Mount Base Design: The RAM-B-202 RAM Mount Marine Grade Aluminum Screw Down Plate has a 1.0 inch diameter Rubber Ball connected at right angles to a 2.5 inch diameter Plate. The plate has pre-drilled holes in the base plate, including the universal AMPS hole pattern.