The RAP-B-200-1U consists of a socket at one end that accommodates 1" diameter balls: the other end accommodates octagon buttons. A tightening screw on the side of the arm enables the sockets to clamp firmly on the ball and the button.
Material: High Strength Composite
Ball Size: 1" Rubber Ball "B" Size
Note: The "U" in the part number reflects product packaged in poly bag.