Baseus Halo Series Metal Rings (2pcs/pack) Main features: ultra-thin stainless steel; use freely without interrupting wireless charging; does not overheat; significantly more reliable for securing your smartphone on wireless charging stations and magnetic holders; includes easily removable adhesive, as well as a template and spatula for application, cleaning wipes for surface preparation. Very strong and reliable metal plates will allow you to secure your smartphone even more reliably on wireless charging stations and magnetic holders. The rings can be glued to the case or body of the smartphone, and for convenience, everything needed for self-application is included in the package.