Check the listing for details. RAM-B-139U-A RAM Drill-Down Double Ball Mount with Rectang.... Color: Black, Condition: New. Listed at 41.94 USD. RAM Drill-Down Double Ball Mount with Rectang... RAM-B-139U-A Genuine RAM Products! The RAM-B-139U-A consists of a short length B-size double socket arm, one 2.5 INCHES round plate and one 2 INCHES X 1.7 INCHES plate that contains the universal AMPS hole pattern. The mount is designed with a 1 INCHES diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. The AMPS hole pattern on each plate will connect to many RAM cradles, including all iPad cradles. The included RAM's patented design dampens shock and vibration, helping to extend the life of your device.product dimensions Overall Height: 3.75 INCHES socket to socket length 1.75 INCHES hole pattern Round Plate: 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES & 3-Hole 120-Degree: 1.812 INCHES DiameterRectangular Plate: 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES plate size 2.5 INCHES Diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.44 lb product dimensions Overall Height: 3.75 INCHES socket to socket length 1.75 INCHES hole pattern Round Plate: 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES & 3-Hole 120-Degree: 1.812 INCHES DiameterRectangular Plate: 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES plate size 2.5 INCHES Diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminum packaging type Poly Bag Weight 0.44 lb