Check the listing for details. RAM-111BU RAM Universal Marine Electronic Ball - C Size.... Color: Black, Condition: New. Listed at 33.44 USD. RAM Universal Marine Electronic Ball - C Size... RAM-111BU Genuine RAM Products! The RAM-111BU consists of a C size 1.5 INCHES rubber ball connected at right angles to a flat 6.25 x 2 INCHES 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.hole pattern See Drawingplate size 6.25 INCHES x 2 INCHES ball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.4 lb Additional Information The included plate 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 C Size (1.5 INCHES ) weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbs materials Marine-grade aluminum packaging type Poly Bag Weight 0.4 lb