Check the listing for details. RAP-B-111U RAM Composite Universal Marine Electronic Mou.... Color: Black, Condition: New. Listed at 37.44 USD. RAM Composite Universal Marine Electronic Mou... RAP-B-111U Genuine RAM Products! The RAP-B-111U consists of a 2 INCHES x 2.5 INCHES rectangle base, STANDARD length double socket arm and 6.25 INCHES x 2 INCHES rectangle plate. The rectangle base contains pre-drilled holes, including the universal AMPS hole pattern. The 6.25 INCHES x 2 INCHES rectangle plate contains 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.product dimensions Overall Height: 5 INCHES socket to socket length 3 INCHES 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 B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials High strength compositepackaging type Poly BagWeight 0.49 lb product dimensions Overall Height: 5 INCHES socket to socket length 3 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES See Drawing plate size Top Plate: 6.25 INCHES x 2 INCHES Bottom Plate: 2 INCHES x 2.25 INCHES ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials High strength composite packaging type Poly Bag Weight 0.49 lb