The HX MonitorArm is the perfect accessory to save desk space and add superior ergonomics to a large monitor up to 42 lbs (19 kg). In the box: HX arm, extension, monitor pivot, VESA adapter, desk clamp, grommet mount and attachment hardware. Connects to VESA hole patterns 75x75mm, 100x100mm, 200x100mm, 100x200mm and 200x200mm. Display depth greater than 6 inches (15 centimeters) will reduce weight capacity to 28 lbs (12.7 kg). For a curved monitor, consider the arcs depth to determine compatibility. To use this arm with a 1000R ultra-wide display that is greater than 6 inches (15 centimeters) deep, the accessory HX Heavy-Duty Tilt Pivot (98-540-216) is required.