- 90 degree foldable design: the desktop expansion board opens for use and folds flat for storage, saving desk space and keeping the surface clear when not needed. - Sturdy C-clip design: clamps to the table without drilling or damaging it. Easy to install by clamping on and hand tightening to secure the desktop extension. - Material: the desktop expansion board is made of wood with composite density, while the armrest support frame and the holder for attaching the tray to the table are made of sturdy metal. - Easy to clean: the gap storage plate is waterproof and resistant to scratches and wear, and can be wiped clean with a damp cloth. - Use scenarios: - On a small home or office desk, extend your working area for a laptop, keyboard, mouse, or documents and fold away when not in use. - In the kitchen or workshop, hold utensils, recipe cards, or tools within reach while keeping the main surface tidy. - In classrooms or studios, attach a tray for documents or small equipment and store it away when extra space is needed.