Under Desk Keyboard Shelf DIY Ergonomics Height Adjustable Desk Shelf Description: [High Quality Material]: The keyboard shelf clamp is made of high quality steel, which is reliable in quality, has high load capacity and is durable. [Easy to Install]: Ergonomics The extended desk tray is easy to assemble, requires no drilling and does not damage your desktop. Simply clip it to the edge of your table and screw it in. It holds everything firmly in place and can be adjusted with a simple tightening. [Foldable]: Foldable keyboard shelf, allowing you to store without taking up space. Stable and vibration-free, low noise, no falling off, practical and professional, suitable for home or office use. [Adjustable Range]: Folding keyboard drawer, adjustable range is 0,5-7,5cm, suitable for tables of different thickness. [Multifunctional]: Keyboard shelf under desk, expand desk space, clean desktop and help correct bad posture while sitting. Let you work easier and more comfortably. Specification: Material: steel Size Chart: 19 cm x 8,4 cm / 7,48 inch x 3,31 inch The package includes: 2x Clamps 2x brackets 8x screws