Cotytech Four Monitor Desk Mount Spring Arm Quick Release/Connect Desk-mountable, available in clamp base and grommet base. Clamp table thickness: 0.79"-2.36" (20-60mm); Pole length: 19.68" (500mm). Weight Capacity: Supports 4.4 - 19.8lbs (2 - 9kgs); Tilt: 105; Supports four LCD monitors; Quick mount & quick release designs at 3 connecting points: stand, spring arm and monitor end. Maximum adjustment rendered by tilting, swiveling, pivoting and dynamic height adjustment. Clean look with minimal hardware visible from underside of work surface; Neat and efficient cable management; Easy installation and dis-installation. Rotation: 360; Swivel: Max 240; Solid Aluminum die-cast construction. Maximum productivity and supreme ergonomic comfort. Swift and easy movements and adjustments. Space saving with its compact design. Mounting Pattern: VESA compliant: 75x75 and 100x100; Maximum extension: 15.75" (400mm); 7.87" Height adjustment. Grommet table thickness: 0.79"-2.36" (20-60mm), Hole Diameter: 0.39"-1.97" (10-50mm)