The Mcdodo CM-8490 Magnetic Car Phone Holder is a powerful magnet made of silicone and aluminum alloy. Specifications of the MCDODO CM 8490 Silicone + Aluminum Alloy Magnetic Car Phone Holder Powerful Magnet Highlighted attributes: Exceptionally strong adhesion, 50% increase in suction, 360° rotation, and delicate cabinet To guarantee that the magnetic force creates an internal, independent, closed magnetic field,