Check the listing for details. RAP-B-138-AU RAM Composite Drill-Down Mount with Diamond P.... Color: Black, Condition: New. Listed at 31.44 USD. RAM Composite Drill-Down Mount with Diamond P... RAP-B-138-AU Genuine RAM Products! Simply choose your preferred mounting location and the possibilities become endless with the RAP-B-138-AU. 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. This mount is designed to be a universal mounting solution for both RAM and non-RAM designed products. The hole pattern found on the diamond base will connect to a large variety of third party cradles and mounts. The base has a 1.0 INCHES diameter rubber ball connected at right angles to a 2.5 INCHES diameter base.socket to socket length 1.75 INCHES hole pattern 2-Hole AMPS: 1.912 INCHES 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 High strength compositepackaging type Poly BagWeight 0.29 lb socket to socket length 1.75 INCHES hole pattern 2-Hole AMPS: 1.912 INCHES 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 High strength composite packaging type Poly Bag Weight 0.29 lb