Keyboard tray multi positionFeatures Legato Arm Mechanism lift n lock TM leverless height adjustment 8. 88 height adjustment range of 2. 38 above and 6. 5 below worksurface innovative dial tilt makes angle adjustment quick and easy angle adjustment +100 to 200 tilt and height indicator displays present keyboard position cable management system low profile arm mechanism and tray head give the arm a sleek, thin design and maximizes knee clearance 21 smooth glide storage track 3600