TWO MONITORS AT ONCE: Fits most 17''- 27'' Monitors with the load from 4.4 -19.8 lbs (2-9KG) for each monitor, VESA compliant patterns 75x75mm or 100x100mm; While the whole VESA Plate of this product is 118*118mm,Pls pay special attention to the size of VESA Plate if your monitor are curved monitor, Or your VESA hole is inside a recession area. FULLY ADJUSTABLE RANGE: Your two screens will have 360° rotation, tilt angle +85° to -30°, swivel ±90° Upright up to 10"(260mm) and max extension is 20.8"(530mm). Both arms of the desk mount can be easily adjusted anyway you would like.