Description: 【Rotating Support】Space saving for desk home and office, easy to use,wrist rest extender is 90° foldable, and 10° rotatable, can be rotates under the desk when not in use. 【Desk Clamp Computer Arm Rotating Support】Clamp on tray mouse platform, easy to install without assembly. 【High Quality】Arm Rest Support is made of high quality metal and ABS materials, sturdy and durable. Ergonomic, avoid arm hanging in the air, relax your arms, make arm more comfortable. 【Applicable】This arm rest support suitable for desktop up to 5.5cm thick, convenient use for home or office, desk or chair. 【Desk Extension】The arm wrist rest support for table provides extra area to support your arm, comfortable to rest your arm/wrist, increase the use of space on your desktop. Specification: Material: ABS , Metal Size Chart: 30cmx12cmx9cm/11.81inchx4.72inchx3.54inch Package Includes: 1 Piece Computer Arm Rest Note: Please allow slightly errors due to manual measurement and different monitors.