Double Socket Swivel Arm for 1" Ball, Plastic
The swivel action is very nice. There are times when a standard RAP-B-201U arm can't be positioned as desired because the "leg" attached to the ball can only go to one or the other side of the arm. This swivel arm has a joint in the center that allows the 2 ends to be set to multiple positions. Don't think that it is not strong because it is made of plastic - it is very rugged. The arm has a socket at either end to allow a 1" diameter ball (size "B") accessories to be connected. A tightening screw on on each end of the arm enables the sockets to clamp firmly on a 1" diameter ball. The assembly includes 2 RAP-B-200-1U arms attached to a RAP-280U "double octagon button".
Length (center of socket to center of socket): 3.5 inches (89 mm)
Length with 2 x RAM-B-238U bases: 5.5 inch (140 mm)
Length with 2 x RAP-B-238U bases: 5.9 inches (150 mm)
Weight: 4.7 oz (133 g)