arm dual clamps

Mount-It! Full Motion TV Wall Mount with 39 Inch Long Extension Arms, Heavy Duty Dual Arm TV Mount Fits 65 to 110 Inch TVs & Fits 16 and 24 Inch Studs

Mount-It! Height Adjustable 4 Monitor Stand Arms | Quad Monitor Desk Mount | Fits Four Computer Screens 19 - 32 in. | C-Clamp and Grommet Bases

Mount-It! Single Monitor Arm Desk Mount | Full Motion Articulating Height Adjustable | Fits 21 - 32 in | Gas Spring, Clamp and Grommet Base | Silver

SOG - Powerlock