@ultralmagnet: For friends who have questions, will the adhesive damage the wall? It depends on the material of your wall. If it is made of wood or cement, or if putty is applied, it will not. If it is an uneven wall, it will! Is the magnetic field harmful to the human body? Honestly, if you leave the wall 1mm away, there will be no magnetic force. How did the photo adhere to it? You can use a magnetic photo frame or custom magnetic photo. Do you have any questions? Welcome to leave a message!!! #magnet#magneticballs #magnetic