Perfect for above table adjustments and medical cart uses;Maximum knee clearance assures the most comfort whether the keyboard tray is in use or stored away;Materials: steel (arm); medium-density fiberboard (keyboard & mouse tray); molded PU (wrist rest);No knob or lever needed for height adjustments; simply move to the desired spot and let go;Height adjustment ranges 8 inch total: 3 inch up and 5 inch down;360 degree swivel rotation enables the most ideal keyboard tray position and easy storage;Arm adjust tilting angle: 10 degree up / 20 degree down;9mm ultra thin Keyboard tray dimensions: 20 inch x 11 inch (510mm x 290mm);Tear drop MDF mouse tray has swivel feature; dimensions: 7-1/2 inch x 8-1/2 inch ; Mouse tray can be places left or right; cable manager included