Check the listing for details. RAM-B-103-238U RAM Mounts 1" Ball Standard Length Double Socket Arm Diamond Base. Condition: New. Listed at 22.49 USD. RAM-B-103-238U RAM Mounts 1" Ball Standard Length Double Socket Arm with Diamond Base MUST BE UNOPENED AND UNUSED TO QUALIFY FOR RETURN Description:The RAM-103-238U consists of a diamond base and standard length double socket arm that will accept 1" ball bases. The diamond base measures 2.43" x 1.31" and contain two holes 1.912" 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" 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.Dimensions: Overall Length: 4.31"Material: Powder Coated Marine Grade AluminumBall Size: 1" Rubber "B" Ball SizeWeight: 0.38 lbs. MUST BE UNOPENED AND UNUSED TO QUALIFY FOR RETURN.