Create a more comfortable typing position for wrists and forearms, save space, and keep your work area clutter-free quickly and easily with the SmartFit Clamp-On Keyboard Drawer. It installs in minutes without tools, and won't damage the surface. SmartFit makes finding the right height adjustment for maximum comfort as easy as 1-2-3. Save time and installation (and uninstallation) expense by using sturdy metal clamps that fit desks and table tops up to 1.5" (4 cm) thick.