Fellowes Professional Series Single Monitor Arm 8041601 Fully adjustable for maximum viewing control, this single monitor arm helps to increase desk space. it is able to hold a flat panel monitor up to 10kgs and the clamp attaches to desktops 1 to 3 inches thick or through grommet holes at least 3.25 inches in diameter Fully adjustable for optimum viewing control Easy to mount - clamp attaches to desktop or through grommet hole Elevates LCD monitors from 3\" to 16\" above the desk Minimum reach of 2\" to a maximum reach of 21\" Tilts up or down +/- 37o and freely swings left or right (360o rotation capability) Mounts to surfaces up to 2\" thick; no tools required Meets VESA mounting standards Holds LCD monitor up to 20 lbs NOTE: LCD Monitor NOT Included.