Tooleroo Folding Tray Desk Extender - Clamp-On Table Extension Shelf BlackThis clamp on folding extension tray adds extra working space to your desk, or an extra place setting to your table. The surface extends 24 cm from the desk edge and folds down 90 when not in use, keeping your workspace neat and organised or taking up space when not needed. The steel clamp system fits most standard desk edges between 1 5 cm thick, and includes protective pads to help prevent marks or scratches. Installation is tool free and takes only