This product is either discontinued or we cannot get that from suppliers.
ERGOTRON 687BK Swing-Out Mouse Shelf, Capacity 2.2 lbs, Easily pan 360°, Includes mouse shelf, mounting hardware, TAA (Trade Agreements Act) compliant, Steel and Phenolic composite, BLACK
Keep your mouse handy with this roomy shelf. Ergotron 687BK swivels 360° so the mouse stows away under the attached surface when not in use.