Professional Series Depth Adjustable Dual Monitor Arm, 360 deg Rotation, 37 deg Tilt, 360 deg Pan, Black, Supports 24 lbFeatures two monitor arms that adjust easily in every way. Easy to mount clamp attaches to desktops 1" to 3" thick or through grommet holes at least 3 1 4 in diameter. Elevates monitors from 3 1 2" to 16 1 2" above the desk with a reach of 2 1 2" 27". Tilts up or down + 37 degrees and freely swings left or right (360 rotation capability). Each arm holds a flat monitor up to 24 lbs. Meets VESA mounting standards. Package Includes: Clamp; Attachment