Magnetic couplets are actually normal couplets, which have a soft magnetism, similar to rubber, magnetic, and can be absorbed on steel security doors, cars and other steel.
Good magnetic attraction, good magnetism of magnetic attraction, not easy to fall off. This kind of magnetic couplets will not leave traces, nor will it harm the surface of our car paint. Even if it is absorbed for a long time, uncovering it will not hurt our paint surface.