The RAM Single Socket Arm with Round Swivel Plate RAP-B-200-1-293U consists of a socket at one end that accommodates 1" diameter balls. A tightening screw on the side of the arm enables the socket to clamp firmly on the universal plate. Swiveling single socket arm allows for 360-degree rotation on 6.35cm round base featuring the industry-standard AMPS hole pattern.  

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