Sliding Desktop Keyboard Tray for mobile cart/PC workstation is designed to provide a solid platform for your computer monitors, laptops, medical equipment ONLY compatible with our mobile cart, please reach out to us if you have any inquiry With sliding bracket underneath, the tray can be easily pulled out to suit your needs Made from heavy-duty thickened wood and spray-coating steel bracket for durability and a long lifespan Simply attach the desktop to pole of mobile cart and secure it with screws