Ergonomic design and adjustable under table swivel wrist pad adjustable.The solid metal can be fixed on the table with the thickness of less than 7cm, the thickness of more than 7cm, the edge slope is too , the edge has decorative strips, these tables are not recommended.Space saving, the platform can be rotated 360 degrees to hide under the table, easy to use, can be used at multiple angles, and can be rotated under the table when not in use.Dual use, not only the mouse board, but also the shelf to make more space for the desktop without clutter.colour: blackMaterial: metalsize: 24 * 19.6cmPackage Contents: 1*Rotating tray Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.