Fully adjustable for maximum viewing control, this dual monitor arm helps to increase desk space. it is able to hold flat panel monitors up to 24lbs 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 89mm to 419mm with a reach of 63mm to 686mm, it tilts 37° up and down and swings freely to the left and right.Two fully adjustable monitor arms for optimum viewing control, elevates LCD monitors from 89mm to 419mm above the desk with a reach of 63mm to 686mm, easy to mount clamp attaches to desktops 1-3 thick or through grommet hole, Each arm holds an LCD monitor up to 10kg