Your camera mount will normally consist of three parts. A Ball Base attached to the camera, a Double Socket Arm and another Ball Base to attach to a mounting surface e.g. screw base, U-bolt base etc.
RAP-B Series and RAM-B Series components are compatible with the camera base on this page, both using the 1" diameter ball and socket system.
Select a Double Socket Arm and Ball Base from the following categories ...
RAP-B SERIES (composite plastic): 1Kg Max Device Weight (static)
Recommended maximum camera weight:
0.5 - 1Kg (depending on level of vibration)
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1" Ball Camera Base with 1/4"-20 Threaded Stud