Check the listing for details. RAP-B-138-GA48 RAM EZ-Roll'r Composite Drill-Down Mount for .... Color: Black, Condition: New. Listed at 46.94 USD. RAM EZ-Roll'r Composite Drill-Down Mount for ... RAP-B-138-GA48 Genuine RAM Products! The RAP-B-138-GA48 consists of a 2.5 INCHES diameter round base with the universal AMPS hole pattern, double socket arm, diamond adapter base and high strength composite cradle. The mount is designed with a RAM 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.hardware included Assembly Hardwaresocket 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 Retail BagWeight 0.68 lb hardware included Assembly Hardware 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 Retail Bag Weight 0.68 lb