Check the listing for details. Adjustable Under Desk Keyboard Tray with Sliding Shelf and 360° Mouse Tray. Condition: Used. Listed at 85.00 USD. The adjustable under desk keyboard tray with a sliding shelf and 360° mouse tray is a versatile and functional office furniture piece for businesses and industries. It provides a convenient way to organize and store your keyboard, mouse, and other office essentials underneath your desk, keeping your workspace tidy and maximizing space. The adjustable and sliding features allow for customizable positioning to fit your specific needs, while the 360° mouse tray offers flexibility for comfortable use. This product is a practical addition to any office setting.