Ram Mount Fully Articulating Laptop Tough Tray with Side Mounts. (It does not include the Post base mount but you can either construct your own, grab one online or use it the way you see it attaching the end of the arm to the vehicle dash or center console somehow.
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The tray expands in a spring fashion to accommodate laptops or tablets from 10" wide to 16" wide.
- The RAM Tough-Tray has a expandable tray that can accommodate 10 to 16 inch wide laptops. It is possible to accommodate wider laptops with the addition of longer bolts and spacers (blocks of wood or some other material).
These retail for $375.00 to $450.00. Selling this one for much less.