The km 19764 smartphone tablet holder is ideal for keeping your device securely positioned during music performances streaming or video calls. Designed to fit a wide range of smartphones and tablets it accommodates devices between 120mm and 245mm wide even with cases up to 15mm thick.adjustability is key with this holder. The integrated ball joint allows for full 360 rotation and tilt adjustments ensuring the perfect viewing angle. A flexible mounting arm adds even more positioning control making it easy to set up in various environments.attaching the holder is quick and simple. The sturdy clamping mechanism featuring a user friendly wing nut secures to any tube with a 30mm diameter providing a stable grip. Plus rubber protected jaws keep your device firmly in place while preventing scratches. Please note tablet tube and smartphone not included.