Features: * Application scope: containing iron nickel material panel* The magnetic circuit of A3 steel and magnets made，magnetic force is developed to the maximum，at the same time protect magnet not easy rto broken * Adsorption on the refrigerator and put the key* Adsorption in any place where have metal and can hang itemsSpecification:Size: 25mm*30mm(Dia*H)Working temperature:80Theory of vertical force:14KGThe theoretical level of tension:1.4KGMaterial:strong magnet + A3 steel + 304 ringPackage include1X Neodymium iron boron magnet