SDS Aluminum Mouse Extension Tray 6x6 For All SDS iMount Products For Use With SDS VESA Mount Keyboard Tray (MINI or Adjustable) Extends the SDS Tray to fit a full size keyboard with full size mouse Can be bolted on Left or Right side Purchase 2 and mount to both side to really extend The SDS Tray Aluminum, black powder coated; Small Design for space saving - 6" x 6"