The Gator Frameworks accessory tray attaches securely to microphone stands with an adjustable twist clamp. Adjustment is made easy with the comfortable rubberized soft grip twist knob and can adjust to fit tubing up to 1.38 inch (35mm). The tray surface measures 12 X 7 inch (307mm X 108mm), large enough to hold harmonicas, capos, tuners, a cell phone and other needed accessories. If all this isn't enough, the accessory tray also features a 3 inch (77mm) deep drink holder to keep your favorite beverage close by during practices and gigging. The Gator Frameworks accessory tray keeps needed accessories within arms reach! The pick tab conveniently holds 5 picks for easy access during a performance. Harmonica players, drummers, guitarists, bassists, keyboardists, singers, and other instrumentalists will enjoy the benefits of the Gator Frameworks accessory tray for holding capos, tuners, picks, harmonicas, shakers and other small percussion items and many other small items needed while performing.