The RAM-103U-D consists of the 1.5″ C size diameter ball and socket system with one open socket end; RAM-201U-D socket arm is long length at 9.125″ end to end with a 8″ socket-to-socket length. This mount is designed to be used with any of the C size RAM Mount bases or cradles with a 1.5″ diameter rubber ball. The RAM-202U RAM Round Plate Ball Base features industry standard AMPS hole pattern with 2.5″ diameter base and can be used as an adapter to attach a holder, or a mounting drill-down base.
3-Hole 120 Degree (Small), 3-Hole 120-Degree: 1.812" Diameter, 4-Hole AMPS: 1.181" x 1.496", AMPS 4-Hole
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