2-1/4 inch diameter RAM Mount ball-and-socket components shown in-use.
There are two LPA201 ball-on-flange in each photo, one at each end of the LPA200arm. One is bolted to the motorized cart, and another (not visible) is bolted to the rear of the terminal. SCROLL down for more photos

RAM mount components are interchangeable for different mounting situations - need two ball components (here, an LPA201 and an LPA209) and one arm component (here, an LPA200). In this case, the LPA209 clamp at top will be bolted around an overhead crossmember on the vehicle roll-cage.

RAM mount components are adjustable - here, the LPA209 clamp is bolted around a vertical member of the roll-cage and the arm is swung down.