Magnetic chamfer or magnetic reveal is designed specifically for edge treatment of precast concrete wall panels and small concrete items, integrating safety protection, convenient installation, and aesthetic decoration. It adopts high-performance Neodymium magnets, which can instantly adsorb onto various metal surfaces without the need for glue or screws, greatly simplifying the installation process. Meanwhile, it supports repeated disassembly and use, meeting temporary protection or long-term decoration needs.