Cotytech Expandable Dual Monitor Desk Mount Spring Arm Quick Connect with Clamp Base (DM-CDSA5-C) Desk-mountable, supports up to two 27-Inch LCD monitors; pole length: 19.68-Inch (500mm), makes it expandable to support 3 or 4 monitors with additional arms; available in clamp base and grommet base; Solid Aluminum die-cast construction Clamp table thickness: 0.79-Inch to 2.36-Inch (20-60mm); grommet table thickness: 0.79-Inch to 2.36-Inch (20-60mm), hole Diameter: 0.39-Inch to 1.97-Inch (10-50mm); Solid Aluminum die-cast construction; easy installation and dis-installation; swift and easy movements and adjustments Weight Capacity: Supports 4.4 - 19.8lbs (2 - 9kgs) for each monitor; Tilt: 105; Rotation: 360 (portrait or landscape); Swivel: Max 360; 10.6-Inch Height adjustment; Mounting Pattern: VESA compliant: 75x75 and 100x100; Maximum extension: 15.75-Inch (400mm) Quick connect & quick release designs at 3 connecting points: base, spring arm and monitor end; Easy installation and dis-installation Space saving with its compact design; Neat and efficient cable management; clean look with minimal hardware visible from underside of work surface; Maximum productivity and supreme ergonomic comfort