Check the listing for details. RAM-101U-B RAM Universal Double Ball Mount with Two Roun.... Color: Black, Condition: New. Listed at 64.94 USD. RAM Universal Double Ball Mount with Two Roun... RAM-101U-B Genuine RAM Products! The RAM-101U-B consists of a short double socket arm and two 2.5 INCHES diameter round bases with the universal AMPS hole pattern. Designed into the mount is a 1.5 INCHES diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your device is safe, secure, and within easy reach. RAM's patented design also dampens shock and vibration helping to extend the life of your device.product dimensions Overall Height: 5.225 INCHES socket to socket length 2.5 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameterball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.89 lb product dimensions Overall Height: 5.225 INCHES socket to socket length 2.5 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameter 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 0.89 lb