Description: Ergonomic Desk Extender: The ergonomically designed armrest shelf extends your desk horizontally, fully support your upper limbs, to rest and relax your arm, you will feel more comfortable to work or type Durable Material: The extend board is made of high quality wood material, with smooth surface, providing you a reliable support. durable to use. Space Saving: The extend board is foldable, when it is not in use, you can fold it down to save space. You can place more items such as keyboard, notebook on the extender tray when you work. Easy to install: Easy to install within a few minutes, no harm and damage to your desktop. Compatibility: The extension board is compatible with right-angle desktops, side or front. Specification: Material: Wood Purpose: Table Widen, arm holding Metal Type: Cold Rolled Steel Size Chart: Small: 24x20CM/9.45x7.87inch (Random Color) Large: 55x24cm/21.65x9.45inch (Black) Package Includes: 2 Pieces Desk Extender Boards Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!