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The RAM-HOL-AP18U consists of a high strength composite cradle and hole pattern that will allow the attachment to all RAM components or mounts that contain the universal 2-hole AMPs hole pattern...…….
The RAM-B-238U consists of a B size 1" diameter rubber ball on a 2.43" x 1.31" diamond plate. The plate has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern...………………..
The RAP-B-201U, composite standard double socket arm, has a socket at both ends that accommodates 1" ball bases...…………….