Check the listing for details. RAP-111-B RAM Universal Composite Marine Electronic Mou.... Color: Black, Condition: New. Listed at 55.44 USD. RAM Universal Composite Marine Electronic Mou... RAP-111-B Genuine RAM Products! hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES See Drawingplate size Top Plate: 6.25 INCHES x 2 INCHES Bottom Plate: 2 INCHES x 2.25 INCHES ball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials High strength compositepackaging type Retail BagWeight 1.41 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. plate size Top Plate: 6.25 INCHES x 2 INCHES Bottom Plate: 2 INCHES x 2.25 INCHES ball size C Size (1.5 INCHES ) weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbs materials High strength composite packaging type Retail Bag Weight 1.41 lb