Powerful N45 magnets securely hold larger/heavier phones (with protective cases) - the phone won't vibrate in rough roads/sharp turns/in stop-and-go traffic. In addition, it's easier and less hassle to slap the phone on your body than to hold it in the clip. Sturdy suction cups - A sturdy internal locking mechanism prevents the suction cups from breaking and prevents the entire holder from wobbling on the base; heat-resistant gel adhesive so you don't have to worry about it melting.Easier positioning and anti-vibration arm - Arm size: 7.6 inches long and 0.46 inches thick. It has the right amount of resistance and requires less force to bend it to the desired angle. Comes with 4 metal plates and protective film --- You will receive 2 round + 2 rectangular or 4 rectangular metal plates with the arm. If you have a larger or heavier phone, use the rectangular phone. To avoid any scratches or residue on the back of the phone, please attach the protective film to the front of the magnet plate or the back of the phone/case.