Check the listing for details. RAP-B-101U RAM Universal Composite Double Ball Mount wit.... Color: Black, Condition: New. Listed at 33.94 USD. RAM Universal Composite Double Ball Mount wit... RAP-B-101U Genuine RAM Products! The RAP-B-101U, high strength composite flat surface mount, consists of a double socket arm mount with two 2.5 INCHES diameter round bases with the universal AMPS hole pattern. Rubber ball, socket technology dampens shock and vibration, as well as allows for almost infinite adjustment, perfect viewing angles. For most applications, mount will support up to three pounds.product dimensions Overall Height: 5.4 INCHES socket to socket length 3 INCHES hole pattern 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 High strength compositepackaging type Poly BagWeight 0.42 lb product dimensions Overall Height: 5.4 INCHES socket to socket length 3 INCHES hole pattern 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 High strength composite packaging type Poly Bag Weight 0.42 lb