Metal Tray for Laptop: Helpful in providing an ergonomic workstation for your laptop/notebook, making laptop stand on a mount. Compatibility: This mounting plate fits any 100mm x 100mm holes, Compatible with most mounting arms in the market. The ventilated holes on the base enhance airflow, providing a cool operating environment and preventing the notebook computer from overheating. Mounting hardware is included to easily attach the tray to your mount Solid Construction: Solid all steel construction is designed to keep your monitor safe and secure at all times. Please note that this order includes only the notebook computer tray; the arm support needs to be purchased separately. Material: Metal colour: Black Package Contents: 1 x Laptop tray 1 pack installation accessories (different batches, the actual product may have color differences, it does not affect it) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.