Arkon TAB086 Heavy-Duty Tablet Holder - C-Clamp Mount Arkon\'s Heavy-Duty Adjustable Base C-Clamp Mount for Tablets features a universal holder that adjusts to fit any 9\"-12\" tablet, even with cases. The adjustable 4\" high c-clamp base allows the tablet to be positioned close to the mounting surface, and accommodates mounting on most flat-edged tables, desks and counters, carts, or other flat-edged or cylindrical surfaces. It also mounts to posts and rails. The clamp is adjustable to fit on wide or narrow surfaces.