Fully adjustable for maximum viewing control, this dual 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.Elevating monitors from 88mm - 419mm with a reach of 63mm - 686mm, it tilts 37° up and down and swings freely to the left and right.Fully adjustable for optimum viewing control, elevates LCD monitors from 88mm x 419mm above the desk, minimum reach 63mm to a maximum reach of 686mm, easy to mount clamp attaches to desktop or through grommet hole