Magnetic design, quick and easy to install. The Neodymium Magnet is Safe for Use with all Phones and Tablets. Ball Mount is a high Quality Steel Ball that is Press fit into the Machined Aluminum Base for Security. The magnetic piece can also adhere to other metal stuff, not only the ball shaped base. The powerful neodymium magnet and silicon center provides a strong grip and smooth glide. 360 degree rotating, rotate it to the perfect angle that you want. 3M adhesive can be removed without damaging the surface. Compatible with any mobile device,like cellphone,ipad,GPS etc.