Check the listing for details. RAM-D-115BU RAM Marine Electronics Ball Adapter.... Color: Black, Condition: New. Listed at 45.44 USD. RAM Marine Electronics Ball Adapter... RAM-D-115BU Genuine RAM Products! The RAM-D-115BU, universal mounting plate, consists of a 2.25 INCHES diameter rubber ball, connected at right angles to a flat 6.25 INCHES x 2 INCHES rectangular plate. The plate contains different combinations of pre-drilled holes which will match up to many electronic devices.hole pattern See Drawingplate size 6.25 INCHES x 2 INCHES ball size D Size (2.25 INCHES )weight capacity Standard Use: 6 lbsHeavy-Duty Use: 5 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.64 lb Additional Information The 6.25 INCHES x 2 INCHES 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. hole pattern See Drawing plate size 6.25 INCHES x 2 INCHES ball size D Size (2.25 INCHES ) weight capacity Standard Use: 6 lbsHeavy-Duty Use: 5 lbs materials Marine-grade aluminum packaging type Poly Bag Weight 0.64 lb