[Reinforced K-Shaped Stand] Simply press the release lever to fold it up for storage. Reinforced K-braces provide rigid support for a reliable writing or resting surface that can hold up to 50 pounds. [90 Degree Folding Design] The arm wrist rest shelf can be safely folded with the push of a button with both hands, 90 degree folding design saves desk space when not in use. [Increase Desktop Width] The computer keyboard tray is versatile and can be used to increase the workspace of a bookshelf, desktop front, side, dining table, and to increase the width of the desktop. [Ergonomic] The computer keyboard tray extends the desktop horizontally, fully supports the arms and relaxes the upper limbs for improved working conditions and ergonomics. [Multipurpose] The desk extender tray measures 25x17.5cm and can be used as a platform for printers or speakers, a keyboard tray or an additional storage surface.