About JAPCHET : We offer a broad line of Desk Extender Tray with excellent quality and functionality. JAPCHET is committed to the mission to bring both practical and aesthetic products to your life. We’ve dedicated ourselves to customers' satisfaction with our heartwarming service. Why JAPCHET ? ?The keyboard tray mouse extender itself feels very sturdy and since the clamps are hand tightened it wouldn't damage the desk. ?The depth of the clamping mouth is 3.5 inches, making it works well with just about any desk and can clamp onto very thick desks if needed. ?This ergonomic desk extender tray has a very nice-looking black carbon fiber look finish, which fits perfectly most home/office styles. ?The desk keyboard tray is to be assembled and there are hinges that allow the extender to fold down. For a standing desk, you can fold it down and it's fine. Specifications: Material: Carbon steel+Fiber board Loading Capacity: 55 lbs Size: 20.5 x 9.8 inches Color: black Package List: 1 x Clamp On Desk Extender Tray