360 Degree Rotation Universal Alloy ABS Phone Mount Cradle Holder with Double-Layer Suction Base (black1) Made of good-quality ABS and alloy. It is quite stable, which can also develop its toughness and quality. Moreover, it is non-toxic, odorless, non-magnetic. It has no effect on phones signal. Double-layer suction cup. The suction power is stronger and last longer. The fixture clamp design is quite convenient to exhaust air and detach. The design is quite ingenious, which can rotate in 360 degree. It has no effect on use of USB cable and volume key. It can provide more viewing angles. Skillful clamp design has large range of adjustment and the maximum width can reach 3.5 inches. Inside the clamp is designed soft anti-slip rubber pad, which can effectively protect and stable phone. The rotation design in its neck part has anti-loose design, which can avoid the slipping of the mount when the car is on a bumpy ride.