Scotch Adjustable Keyboard Tray with Wrist Rest for Under Corner Worksurface Adjustable Keyboard Platform for Corner Workstation Long extension arm accommodates corner workstations while low-profile platform provides extra leg space. All-in-one platform design holds both keyboard and mouse. Star knob control for easy height, +/-15° tilt and 360° swivel adjustability. Full-length gel wrist rest with Precise™ optical mousing surface. Holds standard and ergonomic keyboards. Manufacturer’s five-year limited warranty. Workstation Type—Diagonal, Curved or Straight Glide Track Length—21" Keyboard Tray Dimensions—25-1/2 wide x 11-1/2 long Mouse Tray Dimensions—Included in keyboard platform Articulating Arm Height Adjustable (Above to Below Desk)—1" to 4-1/2" Sliding Tray Black