Mercury - ROKK Universal Tablet Clamp Device Holder 8M6005673. OverviewThis ROKK Universal Tablet Clamp gives you a solid way to hold a tablet on the boat without worrying about it sliding around or bouncing out of place. The ratcheting arms tighten down with a firm, predictable grip, and they stay put even when the boat gets a little choppy. When you pair it with a ROKK Mini Mount System, the whole setup feels clean, sturdy, and easy to adjust-perfect for chart apps, weather tools, or anything