Check the listing for details. RAM-B-103-A-238CHU RAM Chrome Double Socket Arm with Diamond Pla.... Color: Black, Condition: New. Listed at 79.44 USD. RAM Chrome Double Socket Arm with Diamond Pla... RAM-B-103-A-238CHU Genuine RAM Products! The RAM-B-103-A-238CHU consists of a CHROME diamond base and SHORT double socket arm that will accept 1 INCHES ball bases. The diamond base measures 2.43 INCHES x 1.31 INCHES and contain two holes 1.912 INCHES from center to center, positioned at both ends of the diamond base. The hole pattern found on the diamond base will connect to many RAM cradles, as well as third party cradles including mounts with the industry standard AMPS hole pattern. Designed into the mount is a 1 INCHES diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this with a twist of the arm knob allows for you to maneuver the mount to your optimum viewing position.socket to socket length 1.75 INCHES hole pattern 2-Hole AMPS: 1.912 INCHES ball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.38 lb socket to socket length 1.75 INCHES hole pattern 2-Hole AMPS: 1.912 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 0.38 lb