Check the listing for details. RAM-B-139U-CA1 RAM Drill-Down Double Ball Mount with Rectang.... Color: Black, Condition: New. Listed at 47.44 USD. RAM Drill-Down Double Ball Mount with Rectang... RAM-B-139U-CA1 Genuine RAM Products! The RAM-139U-AU consists of a medium 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 and a set of #10-32 x 5/8 INCHES machines crews and nuts. 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.hardware included (4) #10-32 x 5/8 INCHES Machine Screws(4) #10-32 Nylock Nutsproduct dimensions Overall Height: 5 INCHES socket to socket length 3 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 ball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.51 lb hardware included (4) #10-32 x 5/8 INCHES Machine Screws(4) #10-32 Nylock Nuts product dimensions Overall Height: 5 INCHES socket to socket length 3 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 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 0.51 lb