RAM® Double Socket Arm with Steel Key Lock Knob - C Size Medium Rail The adapter is a U

The adapter is a U shape

The RAM-118BU provides a C size ball that can be semi permanently strapped to any found post between 4" and 5

The round base adapter contains the industry standard universal AMPS hole pattern

and a C size ball

with a drill-down pedistal base and a rectangular base with 1

RAM® Double Socket Arm with Steel Key Lock Knob - C Size Medium Rail The adapter is a UThe RAM 201LSU, standard double socket arm with steel locking knob, has a socket at both ends that accommodates 1. 5" ball bases. A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. This socket technology allows for almost infinite adjustment and perfect viewing angles. The locking knob, includes a brass 1 4" 20 thread; this allowing you to disengage the screwing of the knob. Once you have set