1. Double spring structure at both ends of the bar, multi-directional adjustment, easy to push and pull.
2. Multi-node knob design, free adjustment from 0 to 360 degrees.
3. The collet is added with silicone protection, anti-skid and scratch-resistant.
4. The revolving chuck reserves the charging port for charging and entertainment.
5. Stretchable chuck, compatible with 4-12.9 inch mobile phone & tablet.