Atdec VF-AT-AA Focus Articulated Accessory Arm Monitor Arm Accessory that easily upgrades the single VF-AT to Support a second monitor that weighs up to 17.5lbs or 8kg VESA mounting hole pattern of 75x75mm or 100x100mm Display height adjustment, tilt, pan and portrait to landscape rotation Made of steel, Aluminum and plastic materials 10 year warranty