? Height Adjustable Keyboard Tray - The keyboard tray with a total of 7 inches of height adjustment, this under desk keyboard tray will let you sit and stand at your desk and achieve better ergonomics. ? Full Motion Under Desk Computer Keyboard Platform - The platform can swivel left and right 90 degrees. It can also tilt 6 degrees up and 22 degrees down for improved comfort. ? Large & Perfect Size - Full size keyboard drawer with a 25” x 9.8” , surface fit all sizes of the keyboard, mouse, and all your extra knick-knacks .We also included a wrist rest to improve wrist comfort. ? Save Space - Placing the keyboard and the mouse on an ergonomic tray improves comfort and creates additional space on the desktop. When not in use, the sliding keyboard tray disappears under the desk. ? Easy Installation - All necessary hardware and instructions are provided for assembly, and mounting your keyboard tray to the desk is an easy process with the adjustable clamps. The tray holds weights up to 11 lbs.