The HD004 clamp mounting pedestal can be used as a replacement, upgrade, or as an addition to an existing pedestal with a Dual-T pattern. It is compatible with Arkon's universal smartphone and tablet holders (sold separately), including the Slim-Grip Universal Tablet Holder (TAB001), Universal Tablet Push Button Holder (TAB003), and Slim-Grip Ultra Universal Smartphone and Midsize Tablet Holder (SM060-2). This mount includes only Arkon's Heavy-Duty Aluminum C-Clamp Base Mounting Pedestal with 10'' Adjustable Arm and Dual-T Head (holders sold separately). The heavy-duty mounting pedestal is made of aluminum, and is ideal for an office or workspace where easy access to a tablet or smartphone is needed, but where surface space is at a premium. Install the C-clamp base on a desk, cart, worktable, bench, lectern, or other table-like surfaces. The 10'' arm adjusts to provide optimum positioning. The C-clamp maintains a firm grip and opens as wide as 1.5 inches. Rotate the swivel ball adapter head for 360-degree rotation for exact positioning of the iPad or other tablet. Bend the 10'' adjustable arm and rotate the swivel ball adapter head for 360° rotation for exact positioning of the device.