The Hercules DG200B Smartphone Holder is a useful little tool that holds up your smartphone for you whilst you're playing, so you can use tuning apps, watch video tutorials or play along with some music with your phone being safely kept upright. The stand will be able to fit most devices with a width between 1.7"-3.5". The tool attaches to most music or microphone stands and fits both round tubes (1.58-2.54cm) and square tubes (1.9cm) with no tools required. The 360 degree ball joint design lets you adjust height and angle so you can decide how you want your smartphone to sit. it is recommended that you remove cases from your devices when using the Hercules DG200B Smartphone Holder.