Adjustable arm moves up or down 5 positions (1" increments each)Tilts up or down +/- 45?, pivots left to right 180?, and allows 360? rotationSupports flat panel monitors up to 21" and weighing up to 20 lbs.Easy to mount; clamps to surfaces up to 2 ?" thick (2" desk overhang required) or mounts in grommet holeIncludes cord management system; VESA compliant