Composite Diamond Base with 1 inch Ball FEATURES Diamond plate features industry-standard AMPS hole pattern and measures 2.43 inch x 1.31 inch Compatible with several RAM® device holders and cradles;ball and socket technology allows for near-infinite adjustability Made of high-strength composite materials Backed by a lifetime warranty OVERVIEW The RAP-B-238U ball base consists of a 1 inch B size rubber ball connected to a 2.43 inch x 1.31 inch diamond plate. The diamond plate features two holes that measure 1.912 inch from center to center, matching the industry-standard AMPS hole pattern. This diamond ball base is compatible with a wide variety of RAM® device holders and cradles. HOLE PATTERN 2-Hole AMPS: 1.912 inch PLATE SIZE 2.43 inch x 1.31 inch BALL/SOCKET SIZE B Size (1 inch ) WEIGHT CAPACITY Standard Use: 2 lbs Heavy-Duty Use: 1 lb MATERIALS High strength composite PACKAGING TYPE Poly Bag WEIGHT 0.03kg