50x50x25mm powerful magnet blocks

The powerful magnet blocks are made from rare earth-neodymium mangetic material.The dimension of the powerful magnets blocks on the picture is 50x50x25mm,this is standard size for magnet,which sold by many magnet distributors.It is magnetized through thickness,the maximum magnetic force can be up to 130kgs,and the surface magnetic field can be over 5700Gs.