Multifunction Storage Shelf: The tray holder provides enough space for small objects such as cell phones, books, glasses, pen, keys, tuner, and other guitar accessories; with drinking holder holder design will keep your drink secure and close by. High Quality: Mic stand utility tray is made of high quality pp material to provide stability during use, lightweight, sturdy and durable. Adjustable: Music Stand can be fixed on the microphone stand or music stand, adjustable clamp will fit most standard sized music sheet stands and microphone stands. Easy to Install: The buckle design is more stable and easy to install. Adjust the clamp-tray to a comfortable height according to your need, and lock the mount in place. Perfect Accessory: The tray surface measures 30cmx20cm/11.81inchx7.87inch, large enough to hold needed accessories. The cup holder can keep your favorite beverage close by during practices and gigging. Specification: Material: PP Size Chart: 30cmx20cm/11.81inchx7.87inch Package Includes: 1 Piece Clamp-tray Note: Please allow slightly errors due to manual measurement and different monitors.