TAGG MAG-GRIP uses rubber encased magnets to provide a secure grip to the device. It has a reversible head that secures your device on bumpy rides. The sticky gel pad secures the mount on most surfaces and is also reusable once dirty. Just rinse with warm water and air dry it and it is ready to be used again. The locking lever provides a suction and a pull force of 6lb and secures the mount on place.