OneSpace Stanton Computer Desk with Pullout Keyboard Tray Sleek and elegant design Pull-out Keyboard shelf Bottom Storage shelf Made of MDF, Steel and PVC Complies with CARB Phase2 Sleek and elegant design Pull-out Keyboard shelf Bottom Storage shelf Made of MDF, Steel and PVC Complies with CARB Phase2 Pre drilled holes are covered with black material and are to be punched through . It cannot be seen but can be pieced through when assembling with the screws provided.